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Antibodies (Abs), T cell receptors (TCRs) and MHC molecules are all involved in the adaptive immune response. All 3 of these (Abs, TCRs and MHCs) have a range of diversity of structure and are composed of different chains.
In most animals (including humans) antibodies are composed of 2 heavy chains and 2 light chains, each of which has constant and variable regions. This is very similar to a T cell receptor, which is composed of an α (alpha) and β (beta) chain - which have a contant and variable region.
In both cases, it is the variable region(s) which determines what the antibody or the T cell receptor can bind to. This is very important for their function.
T cell receptors (TCRs) and antibodies (Abs) are also similar in that their genes are combined and spliced in different ways to create diversity. It is important that both TCRs and Abs be able to recognise may different things.
MHC molecules are responsible for presenting antigens to T cell receptors. Once again, they are composed of an α (alpha) and β (beta) chain, which are different depending on whether they are MHC I or MHC II.
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Is the body's immune response to allergens which are antigens that produce a hypersensitivity reaction including immediate inflammation?
Allergy
Whats the purpose of snot?
Mucus (aka snot) helps to keep mucus membranes lubricated/hydrated and helps clear antigens (virus, bacteria, allergens, etc) from the body.
What is a description of the mechanism that causes allergies?
Allergies result when antigens from allergens bind to mast cells, which release histamines, which in turn cause increased blood flow, sneezing, runny nose, and watery eyes.
Do polio microorganisms have the same antigens as a live pathogen?
Polio microorganisms, specifically the poliovirus, have distinct antigens that are specific to the virus itself. While these antigens can trigger an immune response similar to that of a live pathogen, they do not share the same antigens as other live pathogens. The immune system recognizes these unique poliovirus antigens, allowing for the production of antibodies specific to poliovirus during infection or vaccination.
Where does antigen come from?
Antigens are substances that can provoke an immune response, and they typically originate from pathogens such as bacteria, viruses, and fungi. They can also come from non-infectious sources, including allergens, toxins, and even cancer cells. Antigens are usually proteins or polysaccharides found on the surface of cells, tissues, or viruses, and they are recognized by the immune system's antibodies and T cells.
Does Type B blood have A antigens?
No, type B blood does not have A antigens. Type B blood has B antigens.
How many types of antigens on the erythrocytes?
There are two main types of antigens on erythrocytes - ABO antigens and Rh antigens. ABO antigens include A and B antigens while Rh antigens include RhD antigen. These antigens play a crucial role in determining blood type compatibility for blood transfusions.
When was Tissue Antigens created?
Tissue Antigens was created in 1971.
What are antigens determining blood type carried on?
Antigens, by definition, cause the body to produce antibodies which act against them. You inherit certain antigens which are on your red blood cells. Sometimes these antigens are absent from your RBC. If you are type B, you have B antigens. Type A has A antigens, AB has AB antigens and type O has no antigens. If you are type AB, you can receive AB blood from some one else.
What typoes of cells produce antigens?
All cells produce antigens, or cell surface markers. The only question is whether the antigens are self antigens which means they belong in the body or they're foreign antigens which means they are an invading bacteria or virus (or a cancerous cell).
What are some examples of antigens?
Examples of antigens are poisons, splinters and microorganisms.
What types of antigens are recognized by B cells?
Processed fragments of protein antigens displayed on surfaces of body cells.
