antibody, any of several blood proteins which identify and disable infectious foreign bodies; part of the blood serum that contains antibodies (Immunology)

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Noun
1. a class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune response
(synonym) immunoglobulin, immune serum globulin, immune gamma globulin, immune globulin
(hypernym) gamma globulin, human gamma globulin
(hyponym) immunoglobulin A, IgA

Tu, trade union, association of craftsmen

n. spindle