beta-lactamase producing haemophili and Neisseriae.
D000667:Ampicillin / Q000494:pharmacology; D006193:Haemophilus influenzae / Q000187:drug effects / Q000378:metabolism*; D008826:Microbial Sensitivity Tests; D009344:Neisseria gonorrhoeae / Q000187:drug effects / Q000378:metabolism*; D010403:Penicillin Resistance; D001618:beta-Lactamases / Q000096:biosynthesis*
D000667:Ampicillin; D001618:beta-Lactamases