title: Ampicillin-resistant, beta-lactamase-negative haemophilus influenzae type b.
mesh_terms: D000328:Adult; D000368:Aged; D000667:Ampicillin / Q000494:pharmacology*; D001431:Bacteriological Techniques; D005260:Female; D006192:Haemophilus Infections / Q000175:diagnosis / Q000201:enzymology*; D006193:Haemophilus influenzae / Q000201:enzymology* / Q000302:isolation & purification; D006801:Humans; D007223:Infant; D010403:Penicillin Resistance / Q000187:drug effects*; D013183:Sputum / Q000382:microbiology; D001618:beta-Lactamases / Q000378:metabolism*
chemical_list: D000667:Ampicillin; D001618:beta-Lactamases