title: Physical and biochemical properties of progressive pneumonia virus.
abstract: The physical and biochemical characteristics of progressive pneumonia virus were found to be remarkably similar to those of the ribonucleic acid (RNA) tumor viruses. Significant findings included the presence of a 60 to 70S RNA genome, RNA-dependent deoxyribonucleic acid polymerase activity, and common morphological properties. This information correlates with previously reported biological observations and supports the provisional inclusion of enveloped RNA-containing "slow viruses" within the RNA tumor virus group.
mesh_terms: D000818:Animals; D002460:Cell Line; D002499:Centrifugation, Density Gradient; D011232:Chemical Precipitation; D004254:DNA Nucleotidyltransferases / Q000378:metabolism; D003851:Deoxyribonucleases; D000431:Ethanol; D006868:Hydrolysis; D008297:Male; D008854:Microscopy, Electron; D010710:Phosphates / Q000378:metabolism; D010759:Phosphorus Isotopes; D011648:Pulmonary Adenomatosis, Ovine; D012367:RNA, Viral / Q000302:isolation & purification; D012260:Ribonucleases; D012756:Sheep; D013194:Staining and Labeling; D013395:Sucrose; D013737:Testis; D013936:Thymidine / Q000378:metabolism; D014316:Tritium; D014529:Uridine / Q000378:metabolism; D014776:Virus Cultivation; D014713:Viruses, Unclassified / Q000145:classification / Q000201:enzymology / Q000302:isolation & purification / Q000378:metabolism
chemical_list: D010710:Phosphates; D010759:Phosphorus Isotopes; D012367:RNA, Viral; D014316:Tritium; D000431:Ethanol; D013395:Sucrose; D004254:DNA Nucleotidyltransferases; D003851:Deoxyribonucleases; D012260:Ribonucleases; D013936:Thymidine; D014529:Uridine