Fig. 5. Incremental change and area under the curve (AUC) in plasma (A) glucose and (B) insulin following America ginseng (AG) taken 40 minutes before () or together () with a 75 g oral glucose tolerance test (75 g-OGTT), or a 75 g-OGTT done alone () in 8 nondiabetic subjects. Points or bars with different letters are significantly different (repeated measures ANOVA adjusted for multiple pairwise comparisons with the Newman Keuls procedure, p < 0.05). Data are mean ± SEM. Reference [61].