Features:Contains 5% sheep blood, colistin, and trimethoprim sulfametho x asole (SXT). For the selective isolation of Group A Strep only (S. pyogenes) and e x hibits beta hemolysis. Inhibits other Streps, Gram negative bacteria, and normal respiratory flora. Not to be used for group B strep or pneumococcus.Preferred for isolating Group A Strep from throat culturesContains 5% sheep blood from a veterinary supervised, controlled herd of donor animals. Blood is guaranteed to be from healthy antibiotic-free...