Figure 4: Metformin improves glucose tolerance but not insulin tolerance.

(A) Female and (B) male GTT test. (C) AUC of GTT in female and male. (D) Female and (E) male ITT. (F) AUC of ITT in female and male. n>=25. AUC: area under curve. * p<0.05, t test between i.p. metformin-treated and control group of the same sex.