This book proves: behind the dry lines from a biology textbook are hidden exciting stories - hypotheses, disputes, coincidences and discoveries. Its author, biologist and medical journalist Daniil Davydov, reveals the intricate process of medical discoveries made in the 20th and 21st centuries. Did you know that an internal organ can disappear from an anatomical atlas for several centuries? Or that another organ was long neglected and was discovered only a few years ago? But the brain still hides many secrets, and its structure seems like a real treasure map. The author will take you on a fascinating tour of historical eras and the human body and tell you step by step how scientists, knowledge and science itself grew.