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Drug Sought from African Tree

Scientists are looking at traditional African medicine for possible treatments for Alzheimer’s and Parkinson’s disease. The Salk Institute for Biological Studies is analyzing the leaves and bark of a tree that grows on an island nation off the coast of West Africa.   On São Tomé and Príncipe, traditional healers have used the Voacanga africana tree for hundreds of years. It’s a small tree that produces yellow or white flowers that turn into berries with seeds. The...

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