title: On the possibility of a human breast cancer virus.
mesh_terms: D001943:Breast Neoplasms / Q000209:etiology*; D002499:Centrifugation, Density Gradient; D004254:DNA Nucleotidyltransferases / Q000032:analysis; D005260:Female; D006801:Humans; D008854:Microscopy, Electron; D008895:Milk, Human / Q000382:microbiology*; D009858:Oncogenic Viruses / Q000145:classification / Q000201:enzymology / Q000302:isolation & purification*
chemical_list: D004254:DNA Nucleotidyltransferases