title: Intracisternal A particles in transplantable reticulum cell sarcoma of rats.
abstract: Electron microscopic examination on three lines of transplantable reticulum cell sarcomas, induced spontaneously in the mesenteric lymph nodes of inbred strain ACI rats, proved the presence of intracisternal A particles in all the three tumor lines. The doughnut-shaped particles measured 50 to 70 nm and were seen to bud from the membranes of rough-surfaced endoplasmic reticulum. Frequency of appearance of these particles varied with the tumor line.
mesh_terms: D000818:Animals; D008228:Lymphoma, Non-Hodgkin / Q000382:microbiology / Q000473:pathology*; D009368:Neoplasm Transplantation; D051381:Rats; D011912:Rats, Inbred ACI; D012190:Retroviridae / Q000648:ultrastructure