the mouse mammary carcinoma virus and two unclassified viruses ( mpmv and visna ) appeared to be genetically distinct.a similar analysis of dna synthesized by an rna-dependent dna polymerase associated with a viral-like particle obtained from the cytoplasm of human leukemic white blood cells demonstrated that this dna occupied a space in the affinity pattern of leukemia viruses which is expected of a nucleic acid from a primate-type-c rna tumor virus .
C0000702
a
C0012854
dna