The differentiation and maturation of specific immune mechanisms.
D000361:Agammaglobulinemia / Q000378:metabolism; D000917:Antibody Formation; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007239:Infections / Q000276:immunology; D008214:Lymphocytes; D013950:Thymus Gland; D005719:gamma-Globulins / Q000378:metabolism
D005719:gamma-Globulins