
The two major classes of lymphocytes are: * B cells (which are derived from bone marrow and develop into plasma cells that are the source of antibodies) * T cells (which are processed in the thymus and secrete lymphokines)Antibodies discharge attach to a specific site on an antigen in order to block it or render it harmless. Any capacity capable of triggering an immune response is called an antigen.NIAID reports, at the heart of the immune system is the ability to distinguish between self and non-self. immune cells and other cells in the body usually coexist pacifically in a state known as self-tolerance. In abnormal situations (such as an autoimmune disease), the immune system can wrongly identify self as non-self and execute a misdirected immune attack.According to Medscape, the altered development and function of B cells may play a prominent role in umteen rheumatic disorders. The concept of B-cell depletion therapy is being...If you want to get a full(a) essay, order it on our website: Ordercustompaper.com
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