Failure to detect homology between the DNA of the Shope fibroma virus and the DNA of the sensitive cell.
D000818:Animals; D002247:Carbon Isotopes; D002417:Cattle; D002460:Cell Line; D002499:Centrifugation, Density Gradient; D002586:Cesium; D002712:Chlorides; D003470:Culture Media; D046508:Culture Techniques; D004247:DNA; D004269:DNA, Bacterial; D004279:DNA, Viral / Q000302:isolation & purification; D004926:Escherichia coli; D006736:Horses; D006358:Hot Temperature; D007106:Immune Sera; D007668:Kidney; D009691:Nucleic Acid Denaturation; D009693:Nucleic Acid Hybridization; D011212:Poxviridae; D011817:Rabbits; D013936:Thymidine; D013950:Thymus Gland; D014316:Tritium; D014412:Tumor Virus Infections
D002247:Carbon Isotopes; D002712:Chlorides; D003470:Culture Media; D004269:DNA, Bacterial; D004279:DNA, Viral; D007106:Immune Sera; D014316:Tritium; D002586:Cesium; D004247:DNA; D013936:Thymidine