4

xenotropic-MCF leukemia virus 23
xenotropic-MCF leukemia virus 8
GLN retrotransposon family 3-6
GLN retrotransposon family 3-2
mammary tumor virus locus 17
mammary tumor virus locus 14
mammary tumor virus locus 13
endogenous ecotropic MuLV 42
ribosomal RNA, Chr 4 cluster
MCF endogenous virus 15