title: ANTIGENIC AND ENZYME SYSTEM CHANGES IN BETA HEMOLYTIC STREPTOCOCCI RESISTANT TO PENICILLIN, STREPTOMYCIN, BACITRACIN AND AUREOMYCIN.
authors.affiliation: Department of Pediatrics, University of Chicago.
authors.forename: H M
authors.initials: HM
authors.lastname: Gezon
authors.forename: D M
authors.initials: DM
authors.lastname: Fasan
mesh_terms: D001414:Bacitracin; D002751:Chlortetracycline; D010403:Penicillin Resistance; D010406:Penicillins; D013290:Streptococcal Infections / Q000208:ethnology*; D013291:Streptococcus / Q000208:ethnology*; D013307:Streptomycin
chemical_list: D010406:Penicillins; D001414:Bacitracin; D002751:Chlortetracycline; D013307:Streptomycin