sentences:  Hemolysis is detected on human blood agar plates, and routine plating of specimens suspected of containing "A. haemolyticum" on human blood agar is suggested to distinguish it from "Streptococcus pyogenes", as "A. haemolyticum" can easily be confused with this organism.Microscopic morphology differences can be used to differentiate them, since "Arcanobacterium" is rod-shaped and "Streptococcus" is coccus-shaped."A.