Together, Volk and Brown have enhanced the many strengths of this text, in addition to adding some new innovations. A completely new, full-color illustration program has been created. High Points, newly created and interspersed throughout the chapter material, summarize key concepts for readers as they progress. Pronunciations for major terms are provided for the first time in this edition. Application of Ideas, questions that promote critical thinking, have been newly introduced in this edition. Microbiology Milestones, the very popular boxed essays from the seventh edition, have been revised and enhanced.