Echinacea-induced cytokine production by human macrophages.

Abstract

Echinacea purpurea, a plant originally used by native Americans to treat respiratory infections, was evaluated for its ability to stimulate the production of cytokines by normal human peripheral blood macrophages in vitro. Commercial preparations of echinacea fresh pressed juice and dried juice were tested at concentrations ranging from 10 micrograms/ml to… (More)

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