BRS Microbiology and Immunology is designed specifically for medical and graduate students for successful preparation for the United States Medical Licensing Examination (USMLE). This newest edition features a full-color design and illustrations throughout. The book is divided into 12 chapters and presents both a "bug" approach followed by an organ systems approach. It remains a succinct description of the most important microbiological and immunological concepts and critical details needed to understand important human infections and the immune system function and malfunction. End-of-chapter review tests feature updated USMLE-style questions with rationales and four USMLE comprehensive examinations (in 50 question blocks like Step 1) help test memorization and mastery of the subject.A companion website offers the fully searchable text and an online question bank.