title: Two kinds of activity promoted by culture filtrates of male strains of E. coli K-12. Inhibition of "nitrogen mustard after-effect" and stimulation of genetic recombination.
mesh_terms: D001426:Bacterial Proteins / Q000502:physiology*; D003227:Conjugation, Genetic; D004926:Escherichia coli; D005111:Extrachromosomal Inheritance; D005374:Filtration; D008466:Mechlorethamine / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D011995:Recombination, Genetic; D012723:Sex; D014161:Transduction, Genetic
chemical_list: D001426:Bacterial Proteins; D008466:Mechlorethamine