as a first step in understanding variations in pathogenicity among the class ii avian sarcoma viruses and the mechanism by which the oncogene of these viruses was transduced from a single cellular locus , we have molecularly cloned the viral genome of prcii , its related helper prcii-av , and the chicken proto-oncogene ( c-fps ) from which v-fps derived .
C0007634
cellular
C1708726
locus