Biology
Biology, 18.10.2019 10:20, wezner19

Varicose veins seen in the superficial veins of the legs are unsightly and often treated by surgically removing them. however, even without these veins being present, the return of all blood toward the heart from the legs is not diminished primarily because

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Varicose veins seen in the superficial veins of the legs are unsightly and often treated by surgical...

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