01501naa a2200385 a 450000100080000000500110000800800410001910000170006024500950007726000090017252005260018165000230070765000320073065000120076265000150077465000150078965000190080465000130082365000120083665000110084865000140085965000120087365000160088565000120090165000120091365000100092565000140093565000110094965300130096065300210097365300250099470000200101970000180103977300580105715226972023-06-27       1971    bl uuuu     u00u1 u    #d1 aSTONE, L. B.  aPhysical and biochemical properties of progressive pneumonia virus.h[electronic resource]  c1971  aThe 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 commom morphological properties. This information correlates with previouly reported biological observations and supports the provisional inclusion of enveloped RNA-containing "slow viruses" within the RNA tumor virus group.  aDeoxyribonucleases  aDNA nucleotidyltransferases  aEthanol  aHydrolysis  aMetabolism  aSheep diseases  aStaining  aSucrose  aTestes  aThymidine  aUridine  aBioquímica  aDoença  aFísica  aOvino  aPneumonia  aVírus  aLabeling  aVirus ultivation  aViruses unclassified1 aTAKEMOTO, K. K.1 aMARTIN, M. A.  tJournal Virologygv. 8, n. 4, p. 573-578, Oct., 1971.