▪ Colonies more mucoid, may have concave centers.
▪ Dissolve in 10 min with bile (sodium desoxycholate)
▪ Zone of inhibition around optochin (P) disk
Alpha streptococci vs Streptococcus pneumoniae
on BAP 2007
▪ Pathogens only in blood cultures.
▪ Colonies smaller & more dry.
▪ Will not dissolve with bile.
▪ No zone around P disk.