Ampicillin-resistant Haemophilus influenza in Nebraska.
D000667:Ampicillin; D006192:Haemophilus Infections / Q000453:epidemiology; D006193:Haemophilus influenzae / Q000302:isolation & purification*; D006801:Humans; D009329:Nebraska; D010403:Penicillin Resistance; D001618:beta-Lactamases
D000667:Ampicillin; D001618:beta-Lactamases