Staphylococcal Skin Infections 。S.epidermidis Gram-positive cocci,coagulase-negative Staphylococcus aureus Gram-positive cocci,coagulase-positive 。Leukocidin 。Exfoliative toxin • S. epidermidis • Gram-positive cocci, coagulase-negative • Staphylococcus aureus • Gram-positive cocci, coagulase-positive • Leukocidin • Exfoliative toxin Staphylococcal Skin Infections