other

polytropic murine leukemia virus 36
polytropic murine leukemia virus 35
polytropic murine leukemia virus 27
polytropic murine leukemia virus 21
polytropic murine leukemia virus 20
polytropic murine leukemia virus 17
polytropic murine leukemia virus 16
polytropic murine leukemia virus 14
polytropic murine leukemia virus 13
xenotropic murine leukemia virus 63