title: Animal--man cancer probes continue.
mesh_terms: D000818:Animals; D002415:Cats; D004285:Dogs; D005260:Female; D006801:Humans; D009052:Leukemia Virus, Murine; D007945:Leukemia, Lymphoid / Q000453:epidemiology*; D008297:Male; D008854:Microscopy, Electron; D015047:Zoonoses / Q000453:epidemiology*