Galen was a prominent Greek physician, surgeon, and philosopher in the Roman Empire, whose work significantly influenced the field of medicine and anatomy for centuries. He is best known for his contributions to the understanding of human anatomy, physiology, and medical practices, laying the groundwork for both ancient and medieval medical knowledge. Galen's theories on the four humors and his systematic approach to dissection and observation were revolutionary at the time and formed a foundation for later medical studies.
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