title: Re: persistence of Treponema pallidum following penicillin G therapy.
mesh_terms: D006801:Humans; D010400:Penicillin G / Q000008:administration & dosage / Q000494:pharmacology*; D010403:Penicillin Resistance; D014210:Treponema pallidum / Q000187:drug effects*
chemical_list: D010400:Penicillin G