[Drug resistance of bacteria--the present status and the future prospect. 1. Streptococcus pneumoniae].
D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D006801:Humans; D007769:Lactams; D013296:Streptococcus pneumoniae / Q000187:drug effects*
D000900:Anti-Bacterial Agents; D007769:Lactams