Definition of “IgM” - English Dictionary

british dictionary

“IgM” in British English

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IgMnoun [ U ]

specialized

abbreviation for Immunoglobulin M (IgM): the largest antibody (= a substance in the blood that attacks harmful bacteria) in the human circulatory system

(Definition of “IgM” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)