title: CHANGING character of commercial penicillin, with suggestions as to the use of penicillin in syphilis.
mesh_terms: D002601:Chancre / Q000628:therapy*; D001523:Mental Disorders; D010406:Penicillins; D013404:Suggestion; D013587:Syphilis / Q000628:therapy*
chemical_list: D010406:Penicillins
keywords: CHANCRE/therapy; PENICILLIN/commercial; SYPHILIS/therapy