title: New method for detecting in vitro inactivation of penicillins by Haemophilus influenzae and Staphlycoccus aureus.
abstract: A new technique for detecting penicillinase production in Haemophilus influenzae and Staphylococcus aureus was compared with the capillary procedure for detecting beta-lactamase and the Bauer-Kirby disk susceptibility procedure. Isolates were classified similarly by all three procedures.
mesh_terms: D000667:Ampicillin / Q000037:antagonists & inhibitors; D006193:Haemophilus influenzae / Q000378:metabolism*; D008826:Microbial Sensitivity Tests / Q000379:methods; D010405:Penicillinase / Q000096:biosynthesis; D010406:Penicillins / Q000037:antagonists & inhibitors*; D013211:Staphylococcus aureus / Q000378:metabolism*
chemical_list: D010406:Penicillins; D000667:Ampicillin; D010405:Penicillinase