The regulation of IgM production in the chick: roles of the bursa of fabricius, environmental antigens, and plasma IgG.
D000818:Animals; D000917:Antibody Formation; D000941:Antigens; D002060:Bursa of Fabricius / Q000276:immunology*; D002645:Chickens; D005856:Germ-Free Life; D007074:Immunoglobulin G; D007075:Immunoglobulin M / Q000096:biosynthesis*; D013739:Testosterone / Q000494:pharmacology
D000941:Antigens; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D013739:Testosterone