Penicillin-resistant Streptococcus pneumoniae.
D000667:Ampicillin / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000494:pharmacology* / Q000627:therapeutic use; D006801:Humans; D007223:Infant; D008581:Meningitis / Q000188:drug therapy / Q000382:microbiology*; D010400:Penicillin G / Q000494:pharmacology; D010403:Penicillin Resistance; D013296:Streptococcus pneumoniae / Q000187:drug effects*
D000900:Anti-Bacterial Agents; D000667:Ampicillin; D010400:Penicillin G