title: The immunological response to a killed bacterial antigen in foetal and neonatal rats.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D000917:Antibody Formation; D000941:Antigens / Q000494:pharmacology*; D002003:Brucella abortus / Q000276:immunology*; D005260:Female; D005333:Fetus; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D011270:Pregnancy, Animal; D051381:Rats
chemical_list: D000941:Antigens