title: Growth on Congo red agar: possible means of identifying penicillin-resistant non-penicillinase-producing gonococci.
abstract: Exceptional strains of gonococci that grow on Congo red agar were found to be penicillin-resistant non-penicillinase producers.
mesh_terms: D000362:Agar; D003224:Congo Red; D009344:Neisseria gonorrhoeae / Q000187:drug effects / Q000201:enzymology / Q000254:growth & development*; D009345:Neisseria meningitidis / Q000254:growth & development; D010403:Penicillin Resistance; D010405:Penicillinase / Q000096:biosynthesis; D013045:Species Specificity
chemical_list: D003224:Congo Red; D000362:Agar; D010405:Penicillinase