Cases & Concepts Step 1: Basic Science Review helps medical students prepare for USMLE Step 1 by studying basic science topics combined with clinical data, learning both the "why" of a principle and how it is seen in practice. Working through 116 clinical cases in microbiology, immunology, pharmacology, biochemistry, genetics, embryology, behavioral science, neuroscience, and epidemiology, the reader gains experience analyzing cases, learns classic presentations of common diseases and syndromes, and integrates basic science concepts with clinical applications. Cases are followed by USMLE-style questions with answers and rationales. Thumbnail and Key Concept boxes highlight key facts. A companion website offers fully searchable text online.