title: Differences between Escherichia coli B-r and Salmonella typhimurium LT-2 in the sedimentation behavior of the deoxyribonucleic acid synthesized after x-irradiation.
abstract: After irradiation, nearly equal amounts of deoxyribonucleic acid (DNA) are synthesized in radiation-sensitive Salmonella typhimurium and in resistant Escherichia coli B/r. However, the DNA synthesized in S. typhimurium is of low molecular weight, whereas that made in the E. coli B/r is like that synthesized in the unirradiated controls.
mesh_terms: D002499:Centrifugation, Density Gradient; D003470:Culture Media; D004261:DNA Replication; D004269:DNA, Bacterial / Q000032:analysis* / Q000096:biosynthesis; D004926:Escherichia coli / Q000032:analysis / Q000378:metabolism / Q000528:radiation effects*; D005827:Genetics, Microbial; D008970:Molecular Weight; D011830:Radiation Effects; D011831:Radiation Genetics; D012486:Salmonella typhimurium / Q000032:analysis / Q000378:metabolism / Q000528:radiation effects*; D013395:Sucrose; D013698:Templates, Genetic; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D003470:Culture Media; D004269:DNA, Bacterial; D014316:Tritium; D013395:Sucrose; D013936:Thymidine