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Dose response effects of Perna (Tween-20 extract) on IL-2 secretion levels in EL-4 mouse thymoma cells. Each bar represents the mean ± SEM of data points from three independent experiments with triplicate wells. Columns representing the different concentrations are statistically different from the stimuated but untreated baseline control (no Perna). P ≤ 0.01.
