Fig. 2
From: Estrogen modulates central and peripheral responses to cold in female rats
Plasma levels of estradiol (A, C) and progesterone (B, D) in Experiments 1 and 2, respectively. Values are given as the mean ± SE [A n = 17 (9 in the E2 (+) group and 8 in the E2 (−) group), B n = 13 (6 in the E2 (+) group and 7 in the E2 (−) group), C n = 36 (17 in the P group and 19 in the D1 group), D n = 36 (17 in the P group and 19 in the D1 group)]. *Significant difference between the E2 (+) and E2 (−) groups, or the P and D1 groups, P < 0.05. #Significant difference between the E2 (+) and P groups or between the E2 (−) and D1 groups for circulating levels of estradiol or progesterone, P < 0.05