title: 'C'-type virus particles in rat tumors.
mesh_terms: D000818:Animals; D001853:Bone Marrow / Q000382:microbiology; D001854:Bone Marrow Cells; D005260:Female; D007945:Leukemia, Lymphoid / Q000382:microbiology; D007951:Leukemia, Myeloid / Q000382:microbiology; D008198:Lymph Nodes / Q000382:microbiology; D008325:Mammary Neoplasms, Experimental / Q000382:microbiology*; D008854:Microscopy, Electron; D051381:Rats; D011916:Rats, Inbred F344; D012190:Retroviridae / Q000302:isolation & purification*; D013154:Spleen / Q000382:microbiology; D013950:Thymus Gland / Q000382:microbiology; D014779:Virus Replication