Throughout the history of mankind, blood was considered not just a liquid flowing through vessels, but a special substance with incredible properties. With its help, the ancestors performed rituals to appease the gods and gain eternal youth. Blood became a catalyst for important political events and a subject of keen interest for doctors and researchers of the past. Today, with one drop you can learn everything about human genes, obtain stem cells that can heal diseased organs, and it is unknown how many more unique abilities it conceals within itself. This book will guide you through the intricate labyrinths of “bloody history” - from primitive myths, noble royal diseases, outlandish ideas and dangerous experiments to the most modern scientific concepts and complex operations. It is impossible to understand the world without knowledge about blood, and its study is also a search for answers to the eternal questions of man: who are we and where are we from? The publishing design is preserved in PDF A4 format.