what are their forms ?
The membrane-bound form of an antibody may be called a "surface immunoglobulin" (sIg) or a "membrane immunoglobulin" (mIg).
Antibody
The membrane-bound form of an antibody may be called a "surface immunoglobulin" (sIg) or a "membrane immunoglobulin" (mIg).
what is the role of antibodies in the immune system An antibody is used by the immune system to neutralize pathogens such as pathogenic bacteria and viruses.
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Antibody [SEP] Forms
The membrane-bound form of an antibody may be called a "surface immunoglobulin" (sIg) or a "membrane immunoglobulin" (mIg). It is part of the "B cell receptor" (BCR), which allows a B cell to detect when a specific antigen is present in the body and triggers B cell activation. The BCR is composed of surface-bound IgD or IgM antibodies and associated Ig-α and Ig-β heterodimers, which are capable of signal transduction. A typical human B cell will have 50,000 to 100,000 antibodies bound to its surface. Upon antigen binding, they cluster in large patches, which can exceed 1 micrometer in diameter, on lipid rafts that isolate the BCRs from most other cell signaling receptors.