RNA-DNA hybrids at the cytological level.
D000818:Animals; D001001:Anura; D001345:Autoradiography; D002460:Cell Line; D002499:Centrifugation, Density Gradient; D046508:Culture Techniques; D003582:Cytogenetics; D004247:DNA; D006367:HeLa Cells; D006824:Hybridization, Genetic; D007668:Kidney; D012313:RNA; D014316:Tritium
D014316:Tritium; D012313:RNA; D004247:DNA