Synonyms : Fibroblast Virus, Human, Permanent, Oncoviruses Type B, Oncoviruses Type B, Mammalian, Oncoviruses, Type D, Retroviruses, Type D, Type B Oncoviruses, Type B Oncoviruses, Mammalian, Type D Oncornaviruses, Type D Oncoviruses, Betaretroviruses, Oncornavirus, Type D