Andrew Francis Dixon (1868-1936)
Aston, S. Alexandra
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Andrew Francis Dixon studied human anatomy and egg cells at the turn of the twentieth century in Ireland and Great Britain. Dixon studied the sensory and motor nervous system of the face, the cancellous bone tissue of the femur, supernumerary kidneys, and the urogenital system. In 1927 Dixon described a mature human ovarian follicle. This follicle, Dixon noted, contained an immature human egg cell (oocyte) with a visible first polar body and the beginnings of the second polar body. Dixon's work helped researchers describe many of the items found in follicles during the production of oocytes, and it helped them identify when, where, and how those items were produced. Based upon his descriptions, later researchers further described polar bodies and investigated their functions.