Fig. 2From: In vitro selection of Staphylococcus aureus mutants resistant to tigecycline with intermediate susceptibility to vancomycinδ-Hemolysin assays. The strain streaked vertically is β-hemolysin-producing RN4220. Strain N315 was used as a negative control. a A zone of enhanced hemolysis by strain 94159p is seen as an arrowhead (δ-hemolysin); the δ-hemolytic capacity has been lost by strain 94159 m. b Strains 2028p and 2028 m both produce β- and δ-hemolysinsBack to article page