he antibody molecule is composed of four polypeptide chains two identical light chains and two identical heavy chains—joined by disulfide bridges. The light chains have a variable portion that is different in each type of antibody and is the active portion of the molecule that binds with the specific antigen. Each antibody has a unique target known as the antigen present on the encroach organism. This antigen is like a key that support the antibody in identifying the organism. This is due to fact of both the antibody and the antigen has similar structure at the tips of their “Y” structures. Broad range of Antibody Sigma. The era of antibiotics is coming to a popular. In just a couple of generations, what once appeared to be marveled medicines have been beaten into ineffectiveness by the bacteria they were designed to knock out.
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