Development of the fetal immune system.
D000917:Antibody Formation; D001402:B-Lymphocytes / Q000276:immunology; D003169:Complement Inactivator Proteins / Q000097:blood; D003165:Complement System Proteins / Q000096:biosynthesis; D005312:Fetal Blood / Q000032:analysis; D005333:Fetus / Q000276:immunology*; D005865:Gestational Age; D006801:Humans; D007111:Immunity, Cellular; D008213:Lymphocyte Activation; D007959:Lymphocyte Culture Test, Mixed; D008233:Lymphotoxin-alpha / Q000096:biosynthesis; D012397:Rosette Formation; D013601:T-Lymphocytes / Q000276:immunology; D013950:Thymus Gland / Q000276:immunology
D003169:Complement Inactivator Proteins; D008233:Lymphotoxin-alpha; D003165:Complement System Proteins