What discovery did herophilus make

He is also credited with the discovery of the ovum, and was the first to make a scientific description of what would later be called Skene's gland, and in 2001 was renamed the female prostate. Herophilos believed that exercise and a healthy diet were integral to the bodily health of an individual. Herophilos once said that "when health is absent, wisdom cannot reveal itself, art cannot become manifest, strength cannot be exerted, wealth is useless, and reason is powerless".

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