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Chicca, Andrea; Raduner, Stefan; Pellati, Federica; Strompen, Thomas; Altmann, Karl-Heinz; Schoop, Roland; Gertsch, Jürg (2009). Synergistic immunomopharmacological effects of N-alkylamides in Echinacea purpurea herbal extracts. International immunopharmacology, 9(7-8), pp. 850-8. Amsterdam: Elsevier 10.1016/j.intimp.2009.03.006
