The Science of Scabs and Pus : The Sticky Truth about Blood

Blood is vital for life. We can't live without it, so the body tries to keep blood safe and clean inside it. We all have blood inside us. It is constantly on the move, traveling around your body carrying all sorts of useful things the body needs. This engrossing guide to blood explores the structure, uses, and lifecycle of blood, covering everything from why we grow scabs over cuts to why people donate blood at hospitals.