Figure 3From: Alteration of the hypothalamic-pituitary-gonadal axis in estrogen- and androgen-treated adult male leopard frog, Rana pipiensPituitary LH concentrations in implanted frogs. Pituitary LH concentrations in frogs implanted for (A) 10 days or (B) 30 days with either Ch, DHT, or E2. Each bar represents mean ± SEM. Dissimilar letters indicate significant difference between groups. N = 7–10.Back to article page