title: Acquired immunity in opossum (Didelphis virginiana) embryos.
mesh_terms: D000818:Animals; D000906:Antibodies / Q000032:analysis; D000917:Antibody Formation; D000956:Antigens, Viral; D001435:Bacteriophages / Q000276:immunology; D002417:Cattle / Q000276:immunology; D002591:Cetacea / Q000276:immunology; D002645:Chickens / Q000276:immunology; D003090:Coliphages / Q000276:immunology; D004140:Dinitrophenols; D004622:Embryo, Mammalian / Q000276:immunology; D004625:Embryo, Nonmammalian; D006433:Hemocyanins; D008247:Lysosomes; D009211:Myoglobin; D009500:Neutralization Tests; D009893:Opossums / Q000276:immunology*; D012260:Ribonucleases; D012485:Salmonella typhi / Q000276:immunology; D012710:Serum Albumin, Bovine; D005719:gamma-Globulins
chemical_list: D000906:Antibodies; D000956:Antigens, Viral; D004140:Dinitrophenols; D009211:Myoglobin; D005719:gamma-Globulins; D012710:Serum Albumin, Bovine; D006433:Hemocyanins; D012260:Ribonucleases