1. Sections of Columbia blood agar plates showing grayish, hemolytic colonies of S. haemolyticus (the color of this photograph was modified to enhance visibility of the weak hemolysis zones [arrows] surrounding the colonies, resulting in a nonnatural reddish tinge) (A); orange, nonhemolytic colonies of S. chromogenes (B); creamy, nonhemolytic colonies of S. lugdunensis (C); and whitish, nonhemolytic colonies of S. saprophyticus subsp. saprophyticus (D).
Sections of Columbia blood agar plates showing grayish, hemolytic colonies of S. haemolyticus (the color of this photograph was modified to enhance visibility of the weak hemolysis zones [arrows] surrounding the colonies, resulting in a nonnatural reddish tinge) (A); orange, nonhemolytic colonies of S. chromogenes (B); creamy, nonhemolytic colonies of S. lugdunensis (C); and whitish, nonhemolytic colonies of S. saprophyticus subsp. saprophyticus (D).
Karsten Becker et al. Clin. Microbiol. Rev. 2014; doi: /CMR