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Fig. 2. Effect of time of administration (40, 80 and 120 minutes before glucose challenge) of American ginseng (Panax quinquefolius L.) independent of dose on (A) incremental changes in glycemia at selected time intervals (15, 30, 40, 60 and 90 minutes) and (B) glycemic area under the curve (AUC) following a 25g oral glucose challenge in 10 nondiabetic individuals (repeated measures two-way ANOVA adjusted for multiple Pairwise comparisons with the Newman-Keuls procedure was used for analysis). Data are mean±SEM.