RT Book, Section A1 Kasper, Dennis L. A1 Fauci, Anthony S. A1 Hauser, Stephen L. A1 Longo, Dan L. A1 Jameson, J. Larry A1 Loscalzo, Joseph SR Print(0) ID 1128784181 T1 Staphylococcal Infections T2 Harrison's Manual of Medicine, 19e YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9780071828529 LK accessmedicine.mhmedical.com/content.aspx?aid=1128784181 RD 2024/03/29 AB Staphylococci are gram-positive cocci that form grapelike clusters on Gram’s stain; they are catalase positive (unlike streptococci), nonmotile, aerobic, and facultatively anaerobic. Staphylococcus aureus, which is distinguished from other staphylococci by its production of coagulase, is the most virulent species.