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Stimulation of [35S]GTPγS binding by a clinically used 75% ethanol extract of black cohosh (CR-ethanol). CR-ethanol stimulated [35S]GTPγS binding by 166 ± 15%. Each point represents the mean ± SD (N = 3). The EC50 value was estimated to be 78.1 ± 18.8μg/ml.
