title: Studies on induced resistance to penicillin in a pneumococcus type I.
authors.forename: K R
authors.initials: KR
authors.lastname: ERIKSEN
mesh_terms: D006801:Humans; D010123:Oxyuriasis; D010406:Penicillins / Q000494:pharmacology*; D013296:Streptococcus pneumoniae
chemical_list: D010406:Penicillins
keywords: OXYURIASIS; PENICILLIN/effects; PNEUMOCOCCI/penicillin-resistant