Streptococcus pneumoniae on Culture and Sputum Microscopy - alpha hemolysis; "P disk," optichin, sensitive - Sputum: "lancet-shaped" (tapered on the ends), Gram positive diplococci Rich Davis, PhD, D(ABMM), MLS @richdavisphd #Streptococcus #pneumoniae #Culture #Microscopy #clinical #sputum