Fig. 3.

Male LH, FSH, testes weights, and morphology. a Serum LH levels (left axis) and FSH levels (right axis) for control (dark bars) and Jak2 G−/− mice (open bars) are displayed, units are nanograms per milliliter. Values are mean±SEM and significant differences are noted with brackets above bars. N=8 (Control), N=12 (Jak2 G−/−). Assay was the same as in [13]. b Testis weight of control (dark bars) and Jak2 G−/− (open bars) mice in milligrams. Values are mean±SEM. N=8 (Control), N=10 (Jak2 G−/−). c Seven-micrometer testis sections with H&E staining. White arrows point to Leydig cells, white arrow heads point to spermatogonia, and black arrows point to spermatids inside of both Control and Jak2 G−/− testis