title: [Isolation of Nichols strain of Spirochaeta pallida with changed sensitivity to penicillin. I].
mesh_terms: D000818:Animals; D008297:Male; D010403:Penicillin Resistance; D010406:Penicillins / Q000494:pharmacology* / Q000627:therapeutic use; D011817:Rabbits; D013142:Spirochaeta / Q000187:drug effects* / Q000302:isolation & purification; D013145:Spirochaetales Infections / Q000188:drug therapy; D013737:Testis / Q000382:microbiology
chemical_list: D010406:Penicillins
vernacular_title: Badania nad wyosobnieniem kretków bladych szczepu Nicholsa o zmienionej wrazliwości na penicyline. Doniesienie I.