title: Transformation and DNA size. I. Activity of fragments of defined size and a fit to a random double cross-over model.
mesh_terms: D002501:Centrifugation, Zonal; D003434:Crossing Over, Genetic; D004269:DNA, Bacterial / Q000032:analysis*; D008040:Genetic Linkage; D005827:Genetics, Microbial; D007700:Kinetics; D008954:Models, Biological; D008967:Molecular Biology; D008970:Molecular Weight; D010759:Phosphorus Isotopes; D011995:Recombination, Genetic; D013296:Streptococcus pneumoniae; D014170:Transformation, Genetic; D014461:Ultracentrifugation
chemical_list: D004269:DNA, Bacterial; D010759:Phosphorus Isotopes