The hormones that use second messengers to trigger a cell response are glucagon, calcitonin and thyroid-stimulating hormone which achieve the result through cAMP.
Glucagon takes part in levels regulating the levels of blood glucose .
Calcitonin helps in construction of bones and regulation of blood calcium levels.
Thyroid-stimulating hormones releases T3 and T4 from the thyroid gland .
There are three types of second messengers namely;
calcium ions cyclic nucleotides that include cAMP and cGMP inositol trisphosphate and diacylglycerol.The above are molecules transfer signals that are received at the receptors on the surface of the cell.
The cell response is triggered by the cyclic AMP which is activated by the G-proteins.
The cell responses to hormones involve; protein and enzyme production.
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someone please solve this how doi find the mean mass
The mean mass of a single primary consumer is 1.67 * 10⁻⁴ g.
What is the mean mass of a single primary consumer?A primary consumer is a consumer that depends primarily on the producer for its nutrition.
The mean mass of a single primary consumer is obtained using the formula below:
Mean mass of a single primary consumer = total biomass in g per m² / number of individuals per m²The total biomass in g per m² = 2.5
The number of individuals per m² = 1.5 * 10⁴
Mean mass = 2.5 / 1.5 * 10⁴
mean mass = 1.67 * 10⁻⁴ g
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Assume alternative splicing can generate all permutations and combination. How many proteins could a gene with three exons and two introns generate?
Answer:
Gene splicing is an important source of protein diversity. During a typical gene splicing event, the pre-mRNA transcribed from one gene can lead to different mature mRNA molecules that generate multiple functional proteins.
in this process, which is called “alternative splicing”, one gene thus provides the information for two different proteins
A protein with 3 exons can give up 3 proteins or more. Usually one exon leads to one or more than one proteins. Splicing gives out intron and keep the exons.
What is the main tool for the splicing ?After the splicing the exons are kept whereas introns are removed out thus this creates the tension in the structure which is maintained by the splicosomes.
One protein is produced from one gene and that means only a section of DNA is required to code for a protein. Exons has both coding and non-coding strands. There is no sure thing like that this much of exons produces this much of proteins only.
But there are a fix thing that is there are 64 codons and they make up the 20 amino acids that are essential in nature and they do make an important role in the functioning of the body.
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how many tetrads (bivalents) are formed in a cell with 20 chromosomes at the beginning of meiosis i?
10 bivalents formed in a cell with 20 chromosomes at the beginning of meiosis I.
Meiosis I is division of a cell in two stages that results in four cells, each with half the chromosomes of the original cell. Meiosis is cell division that reduces the number of chromosomes in the parent cell by half and results in production of four gamete cells.
The paired chromosomes are called bivalents. During the prophase homologous chromosomes pair and form synapses. bivalent contain two chromosomes and four chromatids, with one chromosome coming from each parent.
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some species of pathogenic bacteria are able to attack specific cells in the human body due to structures called
Some species of pathogenic bacteria are able to attack specific cells in the human body due to structures called adhesion factors.
Adhesins are parts or extensions of bacteria's cell surfaces that help with adhesion or adherence to other cells or surfaces, typically in the host they are invading or inhabiting. One class of virulence factor is adhesives. Adherence is a crucial stage in the pathogenesis or infection of bacteria that is necessary for colonising a new host. Another potential target for bacterial infection prevention or treatment is adhesion and bacterial adhesins.
Different bacterial species have evolved various methods of attaching receptor-specific proteins to the surface of the bacteria through the processes of evolution. Bacterial adhesins today come in a wide variety of kinds and subclasses, which can be seen in the literature. A fimbria or a pilus is the characteristic structure of a bacterial adhesion. An intramembranous structural protein that serves as a scaffold for multiple extracellular adhesins to adhere to makes up the majority of the bacterial adhesion. The structural protein itself, however, can occasionally function as an adhesion if a piece of the protein extends into the ECM, just like in the instance of the CFA1 fimbriae.
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what are the components of water potential, and why is water potential important for the movement of water in plants?
Components : pressure and solute potential.
Importance :
1) Ensures water moves into plant root
2) Helps movement of water within a plant
3) Factor involved in transpiration
4) Cell wall allows for increased pressure
5) Pressure counteracts osmolarity
Water potential is the energy required, consistent with quantity of water, to transport an infinitesimal amount of water from the pattern to a reference pool of natural loose water. To recognize what meaning, examine the water in a soil sample to water in a drinking glass.
Osmoregulation refers back to the manage of water capability of the blood. The blood is complicated, it has these kind of ions and proteins and stuff. Cells use various things up all of the time and a few more frequently than others at one-of-a-kind instances, night, day, sweat, tears, and many others.
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How are atoms held together in molecules?
A.They combine to form polymers
B. They form covalent bonds
C. They break hydrogen bonds
D. they form ions
Answer:
B
Explanation:
Atoms are held together with chemical bonds, and also known as covalent bonds.
describe the morphology of s. capitis. include cell shape, any motility structures, and its gram stain result
Staphylococcus capitis morphology Gram-positive, non-spore-forming, non-motile cocci are S. capitis subsp. capitis.
What is motility dysfunction?Anywhere throughout your gastrointestinal (GI) tract, motility problems are caused by aberrant muscle or nerve contractions that produce spasms or lack of motion. It's possible that your throat, stomach, large and small intestines, colon, and rectum won't be able to carry out their respective roles in the digestion process.
Why do motility problems occur?Usually, it results from damage to the gut's nerves or muscle. The majority of causes are because of diabetes-related nerve damage (neuropathy), severe stomach operations, or for unknown (or "idiopathic") causes.
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upus is an autoimmune disorder. which of the qualities would you expect to be a symptom of lupus? b cells binding to antigens on host cells and targeting their degradation an increase in ciliary action of the esophagus increased blood clotting if the skin is cut increased phagocytosis of bacterial pathogens in the body
Systemic lupus erythematosus, sometimes known as lupus, is an autoimmune disorder that may result in organ damage, fever, skin rashes, and joint pain. Most often, lupus affects females between the ages of 15 and 45.
What signs and symptoms might a lady have of lupus?Fatigue, hair loss, sun sensitivity, painful and swollen joints, an inexplicable fever, skin rashes, and renal issues are typical symptoms. For SLE, there isn't a single test. Typically, your doctor may inquire about your symptoms, family history, and personal health history. Additionally, your doctor will do a few laboratory tests.
What happens if lupus is not treated?It can increase your risk of acquiring life-threatening conditions including a heart attack or stroke if left untreated. Frequently, lupus There are no outward signs of nephritis. This does not imply that the condition is risk-free, though, as the kidneys may still be suffering harm.
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which is more medial, the cisterna chyli or the spleen?? bboldiitalicsuunderlinebulleted listnumbered listsuperscriptsubscript
The spleen is more medial to the spinal cord than the cisterna chyli. The spleen is part of the lymphatic system
The spleen is the largest organ in lymphatic system, which is an extensive drainage network. The work of the lymphatic system is to balance and level the body fluids and to safe guard the body against contaminations. It consist of a network of lymphatic vessels that take the lymph — a clear, watery fluid that contains minerals such as proteins — throughout the body.
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Plants that reproduce sexually generate seeds. These seeds are often dispersed away from the parent, either through wind, animals, or water. Look at the seed shown in this image of bullrush plants. What form of dispersal do you think it uses, and why?
Wind dispersal is the process through which winds act as dispersal agents, transporting seeds far from the parental plants. In the exposed example, eolic dispersion is used by this plant species to transport seeds.
What is wind seed dispersal?
Wind dispersal refers to the transport of seeds from the parental plant to other places far away from it by the action of winds.
Winds distribute seeds in different directions and varying distances from the parental plant, which makes them good species dispersal agents.
Some plant species adapted to this agent and developed seed structures that make them more suitable for being transported further and better by winds.
Some adaptations are, for instance,
Light seedsDry seedsThey have structures like feathers, hair, wings, and others.
When we look at the image, we can see bunches of seeds attached to the top of tall sticks.
Plants develop these long sticks to expose seeds to the wind. The longer the stick is, the more exposed sees are.
We can also see that seeds have hair-like structures, which facilitate their release and transport whenever winds blow.
The form of dispersal this plant species uses is wind dispersal. We can tell this because of the long sticks to which seeds are attached and seeds with hair-like structures.
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which hormone is incorrectly paired with its effect? insulin - increases number of glut transporters in skeletal muscle cells cholecystokinin - stimulates release of bile from gall bladder glucagon - increases blood glucose levels gastrin - stimulates stomach motility secretin - stimulates release of digestive enzymes from pancreas
The hormone which is incorrectly paired with its effect is: secretin - stimulates the release of digestive enzymes from the pancreas.
The correct statement is: While cholecystokinin (CCK) increases the release of digestive enzymes in the pancreas, secretin stimulates the secretion of bicarbonate (HCO3).
A hormone called cholecystokinin (CCK) serves as a component of your digestive tract. Your small intestine releases it (secretes it) during digestion. It is sometimes referred to as pancreozymin. Although its role in the brain and central nervous system is not fully known, cholecystokinin (CCK) is also present there.
Secretin is a hormone that controls the body's water balance and affects the environment of the duodenum by controlling secretions from the liver, and stomach. The S cells of the duodenum, which are found in the digestive glands, generate this peptide hormone.
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a fish that has been salt cured develops a reddish slime on its skin. you discover its a species of bacteria decompsong the fish. how could you of bacteria
Numerous bacterial illnesses, including Flavobacterium Columnare, Aeromonas, and Pseudomonas, frequently cause fin rot.
What is the cause of fin rot?One of the most avoidable illnesses in aquarium fish is fin and tail rot. Poor water quality is always the main contributor to Fin Rot, but fish stress is also a role. Fish are more prone to Fin and Tail Rot when handled, moved, crowded, or kept alongside fish that are more hostile.
Flavobacterium Columnare: what is its cause?Both overcrowding and cage abrasions are blamed for it. Aquaculture species, particularly catfish, trout, salmon, carp, tilapia, perch, and many aquarium species, as well as wild and ornamental fish, are all affected by the columnaris disease.
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the endangered species act is considered one of the strongest environmental law because it: a. mandates the listing of species that are endangered b. it develops a procedure that must be followed for a species to be listed c. it requires that habitat of listed species be protected d. it requires that all countries of the world acknowledge species listed as endangered e. it requires that migratory species habitat be protected in both countries that the species are found in (breeding grounds country and overwintering countries)
The endangered species Act is considered one of rhe strongest environmental law because option D: it requires that all countries of the world acknowledge species listed as endangered.
The U.S. Fish and Wildlife Service and/or the NOAA Fisheries Service must be consulted by federal agencies to ensure that any actions they authorise, fund, or carry out are not likely to endanger the existence of any listed species or cause the destruction or adverse modification of any designated critical habitat of such species, according to the law. As a result, option D is the best one.
The law forbids any activity that results in the "taking" of any listed endangered fish or wildlife species. Similar restrictions apply to the import, export, interstate, and international trade of the species listed.
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n
6. Even a gene mutation that is a point mutation, meaning it affects
that nucleotide base, can still make a major change
Consider the below information for normal hemoglobin:
ns)
portion of
Hemoglobin DNA
MRNA
AMINO Acids
Sickle Cell Anemia is caused by a point mutation known as a substitution. Show
what would occur if the first T ("thymine") DNA base in the portion shown above
experienced a mutation with a substitution of A ("adenine").
Sickle Cell Hemoglobin:
CCU-GAC1-GAG
mRNA:
GGA CTC CTC
CCU GAG GAG
Proline-Glutamic Acid-Glutamic Acid
Portion of mutated hemoglobin DNA:
Amino Acids:
Amino acids involved in the sickle cell anemia is Proline-Valine-Glutamic acid.
What is sickle cell anemia?Sickle cell is an inherited disease caused by a defect in a gene. A person will be born with sickle cell disease only if two genes are inherited—one from the mother and one from the father.
Sickle cells that block blood flow to organs deprive the affected organs of blood and oxygen. In sickle cell anemia, blood is also chronically low in oxygen. This lack of oxygen-rich blood can damage nerves and organs, including kidneys, liver and spleen, and can be fatal.
Stem cell or bone marrow transplants are the only cure for sickle cell disease, but they're not done very often because of the significant risks involved. Stem cells are special cells produced by bone marrow, a spongy tissue found in the centre of some bones.
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Answer:NRNA is
Explanation:
In molecular biology, messenger ribonucleic acid is a single-stranded molecule of RNA that corresponds to the genetic sequence of a gene, and is read by a ribosome in the process of synthesizing a protein.
the results of a test cross reveal that all the offspring resemble the parent being tested. this parent must be:
The results of a test cross reveal that all the offspring resemble the parent being tested. this parent must be homozygous.
If an organism carries two copies of the same dominant allele, it can be homozygous dominant, while if it carries two copies of the same recessive allele, it can be homozygous recessive. An organism is heterozygous if it possesses two distinct alleles for a gene. The fusion of the gametes of both parents can result in the creation of offspring. if all of the offspring from a test cross look like the parent being tested. Because all of the gametes of the parents carry the same allele, which fuses to produce the same offspring, this parent must be homozygous.
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portion of an rna molecule that codes for making a protein
Answer:
mRNA
Explanation:
The messenger RNA carries the information for making a protein
which of the following is incorrect concerning carbohydrate absorption? multiple choice end products of carbohydrate digestion are transported through the portal vein to the liver. disaccharides are digested to monosaccharides by enzymes that are attached to intestinal cells. maltose is transported through the portal vein to the liver. monosaccharides can enter the villi.
In relation with carbohydrate absorption the correct statement is- maltose is transported through the portal vein to the liver.
The correct option is c.
Complex carbohydrates are first broken down into oligosaccharides by stomach and salivary enzymes, which are subsequently hydrolyzed to monosaccharides by particular disaccharidases situated at the enterocyte brush boundary.
The small intestine is where carbohydrates are chemically broken down instead of the stomach. The disaccharidases and pancreatic amylase complete the chemical cleavage of digestible carbs. The liver receives the monosaccharides once they are absorbed into the circulation.
Dietary lactose, sucrose, and maltose—all of which are sugars—diffuse in the small intestinal lumen and come into contact with the absorptive epithelial cells that line the villi. There, they interact with brush border hydrolases, which break down the sugars into two molecules of glucose by the enzyme maltase.
The complete question is:
Which of the following is incorrect concerning carbohydrate absorption? multiple choice
a. end products of carbohydrate digestion are transported through the portal vein to the liver.
b. disaccharides are digested to monosaccharides by enzymes that are attached to intestinal cells.
c. maltose is transported through the portal vein to the liver.
d. monosaccharides can enter the villi.
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which of the following foods contains phytates? a. rhubarb b. beet greens c. sweet potatoes d. legumes
Legume are the food that contains phytates.
Phytates phytic acid is found in whole grains, seeds, legumes, some nut It helps to lower the absorption of iron, zinc, magnesium, and calcium.
Phytic acid are commonly found is found in sesame seeds, linseeds, and sunflower seeds. Dry fruits contain a high amount of phytic acid in its natural form. that is why the soaking of nuts in water or dehydrating them at a low temperature breaks down some of the phytic acid. Legumes a class of vegetables that includes beans, peas and lentils are among the most versatile and nutritious foods available.
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Which blood vessels are responsible for bringing deoxygenated blood to the heart?.
Pulmonary Artery is responsible for bringing deoxygenated blood to the heart.
Pulmonary Artery Characteristics
- One of the 3 main blood vessels of the body.
- Out of the right ventricle into the 2 bronchi.
- In the form of a tube sleeve that resembles the letter "T".
- The veins are 1.2 inches wide and 2 inches long.
- Has a valve in the right ventricle of the heart.
- Thick-walled, elastic, and muscular.
- Carries carbon dioxide-rich blood (de-oxygenated blood) from the heart to the lungs.
Pulmonary Artery Function
The pulmonary artery is the only artery in the body that carries de-oxygenated blood. The other arteries carry oxygen-rich blood.
The valves in the ventricles act as one-way doors, through which blood can leave the heart but cannot return to the heart.
The right and left pulmonary arteries are responsible for carrying carbon dioxide-rich blood to the two lung bronchi. In the lungs, gas exchange will occur.
Carbon dioxide gas that is no longer needed in the blood will be replaced with oxygen gas that the body needs.
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I really need help with this.
how do these data on the interactions of species of trees within a forest at a particular successional stage, support hypotheses and conclusions about how species interactions can drive/govern/control succession?
Interspecific relations support hypotheses and conclusions about how species like trees within a forest at a particular successional stage can drive/govern/control succession.
The relationship between one species and another inside a community has advanced through their intelligence, based on the prerequisite and the mode of sustenance and protection additionally on the propensities of species.
The connections between individuals of distinctive populaces are named interspecific relations.
Competitive intelligence between woodland trees is driven by species’ characteristic pecking order, not phylogenetic or utilitarian likeness: suggestions for woodland community assembly.
We assessed these hypotheses utilizing two approaches:
(1) by evaluating interaction qualities between species sets from the tree development information and
(2) by testing whether changes in community structure along successional arrangements compare most unequivocally with one hypothesis over another.
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hat is the function of major histocompatibility complex (mhc) proteins? they promote phagocytosis by binding to antigens. they facilitate antigen recognition by t cell receptors. they stimulate cell division. they trigger endocytosis of the antigen.
The purpose of MHC molecules is to bind and display pathogen-derived peptide fragments on the cell surface so that the relevant T lymphocytes can recognise them.
What are MHC proteins, or major histocompatibility complex proteins?MHC, or the major histocompatibility complex, is a set of genes that produce proteins located on the cell surfaces and that aid the immune system in identifying foreign objects. In all higher vertebrates, MHC proteins are present. The complex in humans is also known as the HLA (human leukocyte antigen) system.
What exactly are MHC proteins, and why are they crucial?The major histocompatibility complex (MHC) is a collection of genes that code for cell surface proteins that play a significant part in the immune response. MHC molecules have a major role in how they display antigens.
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Antivirus software prevents infection by recording key attributes about your files and checking to see if they change over time in a process called?.
Compared to human cells, there are about _______ bacterial and archaeal cells inhabiting our bodies.
Compared to human cells, there are about 10 to 100 times as many bacterial and archaeal cells inhabiting our bodies.
Bacteria and archea, both, are unicellular, prokaryotic organisms. They are this very simple organisms consisting of only one cell. On the contrary, human is a complex organism that has millions of cells in his body. Therefore, we can say that our bodies contain between 10 and 100 times more bacterial and archaeal cells than human cells.
Cells make up organisms, which are highly organised structures. It's amazing how intricate even extremely basic, single-celled organisms are. Molecules are made up of atoms inside each cell. Organelles or cell components are created from these. In comparison to single-celled animals, multicellular organisms, have an advantage since their cells can be specialised to fulfil particular functions and even sacrificed in some circumstances for the benefit of the organism as a whole.
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Select all the correct answers.
What happens to water when it changes to ice?
Its density increases.
Its density decreases.
Its mass increases.
Its mass decreases.
Its volume increases.
Its volume decreases.
When water solidifies to ice its volume increases keeping the mass same and therefore the density decreases.
What is solidification process?
Atoms are transformed from a liquid, disordered state through the process of solidification into an ordered solid state. By adhering to the kinetic principles, the conversion rate for the solidification process can be attained.The unique structure of a water molecule is made up of one oxygen atom and two hydrogen atoms. The peculiar arrangement of these atoms gives water certain unusual features, including its high thermal conductivity, surface tension, adhesion, and cohesion.When water freezes, the molecules get organized into a crystalline structure and take on a certain shape. Since there are spaces between individual molecules in this less dense crystalline structure, water expands as the volume of the structure as a whole rises.Ice forms as water expands, and because volume is inversely proportional to density, ice is less dense than water. This is the reason why ice, which feels heavier in its solid state than in its liquid one, floats on water.
Thus when water changes to ice its volume increases and density decreases.
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Rank the strength of attraction between the particles that make up the gas in an oxygen tank, a rock, and juice, all at room temperature.
Answer:
rock, juice oxygen
Explanation:
Going by solid, liquid, and gas, there has to be the most attraction between solid substances.
following right parotid gland surgery to remove a tumor, a 45-year-old woman found that saliva was constantly dripping from the right margin of her mouth. the surgery apparently damaged which nerve?
It appears that the surgery injured the facial nerve's marginal mandibular branch.
Why undergo surgery?In order to diagnose or cure a pathological condition like a sickness or injury, to aid improve body function or appearance, or to mend unwelcome ruptured areas, surgeons use operative manual and instrumental procedures on patients.
What distinguishes a surgery from an operation?Surgery (say: SUR-juh-ree) is performed in a hospital's operating room, often known as the OR or the surgery center. An operation is a different term for having surgery. During surgery, a specialized medical professional known as a surgeon (pronounce: SUR-jun) performs procedures on or within the body to correct any problems.
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After an initial infection, b-cells recognize the measles virus. How is this helpful in human immune response?.
Answer: Accelerates Immune Response in the event the antigen is present again.
Explanation:
B-cells function is to memorize the characteristics of the antigen that activated their parent B cell during initial infection such that if the memory B cell later encounters the same antigen, it triggers an accelerated and robust secondary immune response.
reduced bone and muscle mass and light- producing organs are adaptations most likely to be seen in fish living in the:
Reduced bone mass as well as muscle and light-producing organs are the most likely adaptations seen in fish living in the deep sea.
Deep-sea fish is a collective term for fish that live in the dark below the surface of sunlit waters, that is, below the epipelagic or photic zone in the oceans. By far the lantern fish are the most abundant deep-sea fish. Other marine fish include flashlightfish, cutting sharks, bristlemouth, anglerfish, viperfish, and several species of eelpout.
Organs that emit weak blue, yellow, or green light can be used to communicate. Lanternfish are very important to marine ecosystems, with whales, dolphins, and sharks too.
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which fcr inhibits naive b lymphocyte antigen activation when preexisting antibody to that antigen is present?
CD4+ T cell fcr inhibits naive b lymphocyte antigen activation when preexisting antibody to that antigen is present.
What is B Lymphocyte ?white blood cells of a certain type that produce antibodies. The immune system's B lymphocytes are created from stem cells in the bone marrow. also known as a B cell.
T lymphocytes are necessary for cell-mediated immunity, while B lymphocytes are in charge of humoral immunity. The role of the natural killer cell is in cell-mediated and cytotoxic immunity.
Transitional, naïve, plasma, and memory B cells are the four primary types of B cells, and each has a distinct function in the maturation process.
What is Antigen ?An antigen in immunology is a molecule, molecular structure, foreign particle, pollen grain, etc. that can attach to a particular antibody or T-cell receptor. An immunological reaction may be brought on by the presence of antigens in the body.
Any substance that triggers the production of antibodies by your immune system is referred to as an antigen. This indicates that your immune system is attempting to combat the chemical because it does not recognize it. A substance from the environment, such as chemicals, germs, viruses, or pollen, can
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