title: A possible physiological function for type C RNA viruses.
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000032:analysis; D002415:Cats; D005260:Female; D005333:Fetus / Q000276:immunology; D006801:Humans; D010920:Placenta / Q000382:microbiology; D011247:Pregnancy; D011270:Pregnancy, Animal; D012190:Retroviridae / Q000276:immunology*; D014599:Uterus / Q000276:immunology; D014764:Viral Proteins / Q000378:metabolism
chemical_list: D000956:Antigens, Viral; D014764:Viral Proteins