Betaretrovirus |
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| 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 | |
| A genus of the family RETROVIRIDAE consisting of viruses with either type B or type D morphology. This includes a few exogenous, vertically transmitted and endogenous viruses of mice (type B) and some primate and sheep viruses (type D). MAMMARY TUMOR VIRUS, MOUSE is the type species. | |