The Optochin sensitivity test:  a reliable method for identification of pneumococci.
D006801:Humans; D011803:Quinine / Q000031:analogs & derivatives; D013296:Streptococcus pneumoniae / Q000187:drug effects*
C017303:ethylhydrocupreine; D011803:Quinine
DIPLOCOCCUS PNEUMONIAE/effect of drugs on; HYDROCUPREINES