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Unformatted text preview: together by a polypeptide called a J chain. This produces a large molecule which generally is too big to leave blood vessels. Functions: • Type involved in reactions to “wrong” ABO group blood cells • Aggregates antigens (lumps them together) • Triggers complement system • Enhances phagocytosis Overall, these antibodies are less effective than IgG antibodies, but IgMs can be produced quickly in response to a first encounter with an antigen. . IgD---only tiny amounts of this class are found in serum (0.2% of circulating antibodies). These are found in blood and lymph, and on the surface of B cells. Functions: • Act as antigen receptors on the surface of B cells • No known function in serum...
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This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.
- Fall '09