- Conveniently organized by organ system and general principles. 125+ color clinical photographs integrated throughout the text. Hundreds of full-color illustrations clarify essential concepts and improve retention. Rapid-review section for last-minute cramming. Detailed test-taking strategies to help you maximize your study time. Hundreds of student-recommended USMLE Step 1 review resources. Advice from students who aced the 2012 exam. 1200+ frequently tested facts and mnemonics. Hundreds of high-yield color images and diagrams throughout. Student ratings of more than 300 review products.