title: Attempts at transformation in treponemes. I. A method for isolating DNA from treponemes.
mesh_terms: D004269:DNA, Bacterial / Q000302:isolation & purification*; D008722:Methods; D008970:Molecular Weight; D011402:Pronase / Q000494:pharmacology; D013053:Spectrophotometry; D014208:Treponema / Q000032:analysis*; D014461:Ultracentrifugation
chemical_list: D004269:DNA, Bacterial; D011402:Pronase