Letter: Shigella infection and antibiotic resistance.
D000667:Ampicillin / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000494:pharmacology* / Q000627:therapeutic use; D004405:Dysentery, Bacillary / Q000188:drug therapy*; D006801:Humans; D010403:Penicillin Resistance; D012760:Shigella / Q000187:drug effects*
D000900:Anti-Bacterial Agents; D000667:Ampicillin