This is a drawing of a human dissection done by Andreas Vesalius from his book, De humani corporis fabrica. He changed European medicine forever. Before he made his important discoveries about the human body, doctors relied on the teachings of a Roman called Galen. He used animal bodies in his research in anatomy. Vesalius used real, dead human bodies. The amount of detail Vesalius used in his drawing is astounding. He carefully drew out even the smallest details he found during his research. His lines were precise and incredible for the time. He spared no time when it came to his research. He found out what Galen didn’t know because he used human corpses and Galen didn’t. He wrote descriptions of things the people of his time had little idea about. This man’s incredible research helped carve the path of the medicine we know today.