This authoritative basic sciences overview has set the standard for review books for more than 60 years. The completely updated Eighteenth Edition offers contributions of renowned experts from every discipline who help students develop a confident approach to test-taking. Thousands of sample questions build familiarity with test formats--including USMLE, NBME, and FMGEMS-and help readers prepare for and pass these difficult licensure exams. Other features include comprehensive overviews of each subject area, extensive self-testing, and complete sample questions at the end of each chapter.