title: Singularity of oncogenic activity of strain MC29 avian leukosis viruses.
mesh_terms: D000818:Animals; D001353:Avian Leukosis / Q000097:blood / Q000209:etiology / Q000473:pathology*; D001354:Avian Leukosis Virus / Q000145:classification / Q000472:pathogenicity*; D001773:Blood Cells; D002642:Chick Embryo; D046508:Culture Techniques; D006413:Hematopoietic System / Q000473:pathology; D007668:Kidney / Q000473:pathology; D008099:Liver / Q000473:pathology; D008854:Microscopy, Electron; D010496:Pericardium / Q000473:pathology; D010537:Peritoneum / Q000473:pathology; D013194:Staining and Labeling