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. 2005 Feb 9;2(1):33–38. doi: 10.1093/ecam/neh060

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© The Author (2005). Published by Oxford University Press. All rights reserved.

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Structures of phenolic compounds isolated from green propolis. (A) 2,2-Dimethyl-8-prenylchromene; (B) 4-hydroxy-3,5-diprenyl cinnamic acid (artepillin C); (C) 3-prenyl cinnamic acid allyl ester; (D) kaempferide; (E) propolis benzofuran A. See text for references.