The essential case companion to First Aid for the R USMLE Step 1 400 high-yield cases First Aid TM Cases for the USMLE Step 1 features 400 well-illustrated cases to help you relate basic science concepts to clinical situations. Each case includes drawings or clinical images with Q&As that reinforce key concepts. Chapters are keyed to Tao Le's First Aid for the USMLE Step 1 allowing you to simultaneously study cases and high-yield facts. Content that spans the entire exam: General Principles,Behavioral Science,Biochemistry,Microbiology and Immunology,Chapter 4. Pharmacology,Organ Systems,Cardiovascular System,Endocrine System,Gastrointestinal System,Hematology and Oncology,Musculoskeletal System and Connective Tissue,Neurology and Psychiatry,Renal System,Reproductive System,Respiratory System.