Gram-Positive PathogensGram Positive Pathogens Third Edition Gram positive bacteria, lacking an outer membrane and related secretory systems and having a thick peptidoglycan, have developed novel approaches to pathogenesis by acquiring (among others) a unique family of surface proteins, toxins, enzymes, and prophages. For the new edition, the editors have enhanced this fully researched compendium of Gram positive bacterial pathogens by including new data generated using