| http://www.w3.org/ns/prov#value | - Quercetin is an antioxidant that many believe prevent histamine release???making quercetin-rich foods ???natural antihistamines.??? As reported by The World???s Healthiest Foods:3 ??????on an ounce-for-ounce basis, onions rank in the top 10 of commonly eaten vegetables in their quercetin content.
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