title: A study of pneumonias in relation to bacterial flora and response to treatment in adults.
mesh_terms: D000328:Adult; D000667:Ampicillin / Q000031:analogs & derivatives / Q000627:therapeutic use; D001419:Bacteria / Q000302:isolation & purification; D005260:Female; D006801:Humans; D008297:Male; D010406:Penicillins / Q000627:therapeutic use; D011014:Pneumonia / Q000000981:diagnostic imaging / Q000188:drug therapy* / Q000382:microbiology; D011859:Radiography
chemical_list: D010406:Penicillins; D000667:Ampicillin