This text presents material for the beginning clinician in the important areas of genetics, immunology, and infectious diseases and analyzes disease mechanisms as well as the signs and symptoms of different disease syndromes. Organized by the major body systems and organs, the function of each is discussed in normal and abnormal conditions. Also discussed are diseases frequently presented in the physician"s day-to-day care of patients, making this text a useful reference in understanding how and why the signs and symptoms of various disease states appear. This second edition also includes new chapters on bloody and skin, and case studies.