| http://www.w3.org/ns/prov#value | - Herbal medicine has contributed aspirin from willow bark, reserpine from snakeroot, taxol from the yew tree, but ???natural??? is not automatically safe.In this century these compounds have provided the basis of many common drugs including aspirin which comes from willow bark, and taxol, an ovarian cancer treatment, derived from the pacific yew.Heralded as a breakthrough treatment for breast and o
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