Question

what are the observation made by the galen ​

Answer 1

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Galen did some of the most extensive work in the ancient world on the study of the female anatomy (albeit mostly upon apes, On Anatomical Procedures, I. 2). Galen's observation of a fluid in the horns of the uterus (Kühn IV, 594, 600-601) were the basis of his (mistaken) view that he had discovered female seed.