title: Factors affecting the synthesis of penicillinase by Staphylococcus aureus.
mesh_terms: D004492:Edetic Acid / Q000494:pharmacology; D006415:Hematoporphyrins / Q000494:pharmacology; D007501:Iron / Q000494:pharmacology; D010405:Penicillinase / Q000096:biosynthesis*; D013210:Staphylococcus / Q000378:metabolism*
chemical_list: D006415:Hematoporphyrins; D004492:Edetic Acid; D007501:Iron; D010405:Penicillinase