3057856 MMLV Moloney murine leukemia virus 116 3057855 MMLV murine Moloney leukemia virus 4 3057859 MMLV Montana Myotis leukoencephalitis virus 2 3057860 MMLV Moloney leukemia virus 1 3057858 MMLV Moloney murine leukemia retroviral 1 3057857 MMLV Moloney murine leukemia virus-derived 1 3057861 MMLV MoMuLV 5' LTR 1 3057854 MMLV murine leukemia virus 1 3057853 MMLV myocardial mass of left ventricle 1