other

carcinoembryonic antigen gene family
polytropic murine leukemia virus 9
polytropic murine leukemia virus 8
polytropic murine leukemia virus 3
xenotropic murine leukemia virus 6
xenotropic-MCF leukemia virus 75
xenotropic-MCF leukemia virus 21
polytropic murine leukemia virus 7
polytropic murine leukemia virus 6
polytropic murine leukemia virus 5