Antibodies to this idiotype are formed and are called an antiidiotype. Regulates B cell and T cell immunity. How Antibodies Work Antitoxins interlock with antigens and thereby disable them. Opsins coat antigens making them more susceptible to phagocytosis and the complement system. Neither B nor T lymphocytes Do not need to recognize a specific antigen.
Targets are tumor cells and infected cells.
Initiates degranulation of mast cells and basophils Complement System Receptors for C3b on red blood cells pick up complement coated Ag-Ab complexes and deliver them to the Kupffer cells in the liver. This coating makes them susceptible to attack by a variety of white blood cells. About 6 days after an antigen is introduced, antibodies of the IgM class can be detected. IgG appears at about the 10 day, peaks at several weeks and lasts much longer. Secondary Response of Humoral Immunity On reintroduction of the antigen, IgG production begins almost immediately.