title: Ampicillin resistance in Haemophilus influenzae.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology*; D006193:Haemophilus influenzae / Q000187:drug effects* / Q000201:enzymology; D006801:Humans; D010403:Penicillin Resistance; D010405:Penicillinase / Q000378:metabolism
chemical_list: D000667:Ampicillin; D010405:Penicillinase