title: Interactions among retroviruses Mason-Pfizer monkey, baboon endogenous, simian sarcoma virus-associated and murine leukemia detected by virus-mediated cell fusion inhibition assay.
mesh_terms: D000818:Animals; D002459:Cell Fusion; D006801:Humans; D066298:In Vitro Techniques; D009052:Leukemia Virus, Murine / Q000502:physiology; D051379:Mice; D051381:Rats; D012190:Retroviridae / Q000502:physiology*; D012842:Sarcoma Virus, Woolly Monkey / Q000502:physiology