Definition of Immunoglobulin M
Immunoglobulin M: Abbreviated IgM. A major class of immunoglobulins. IgM includes the antibodies that are usually produced first in an immune response and are later replaced by other types of antibodies.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=21068
Last Editorial Review: 8/4/2002 12:21:47 PM
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