Kiss1Lrh1−/− Mice Have Abnormal Follicles. A and B, Serum LH (A) and FSH (B) levels in female Lrh1fl/fl (fl/fl) and Lrh1Kiss1−/− knockout (KO) mice in diestrus or estrus (n = 5–8 per group). C, Serum FSH and LH levels in female control and kisspeptin neuron-specific Lrh1-Tg mice in diestrus (n = 4 per group). D, Hematoxylin and eosin staining of ovaries (Ov) from fl/fl and KO mice in diestrus or estrus as indicated. 100× magnification, 5-μm sections, scale bars = 100 μm. cl, corpora lutea; g, graafian follicle; cy, follicular cyst. Quantification of follicular cysts (panel E) and corpora lutea (panel F) in ovaries from fl/fl and KO mice (n = sections from 5–8 mice per group). G, Quantification of corpora lutea in superovulated fl/fl and KO mice (n = sections from 3–7 mice per group). H, Plasma E2 concentrations in fl/fl and KO mice in diestrus or estrus (n = 5–8 mice per group). Error bars represent SEM. Student's t test: a = P < .05.