Fig. 6.

Innervation of the fetal mouse ovary. Neural crest-derived nerve fibers extend from the sympathetic chain posterior to the kidney and into the ovary. Neural crest-derived neural bodies are present in the anterior region of the ovarian capsule and also within the anterior region of the ovary. The ovarian neural network is dense in the ovarian medulla, a region without ovarian follicles, and extends projections across the FOXL2+ toward the ovarian cortex. While vasculature and innervation follow similar tracks to the ovary, they exhibit different patterns once inside the ovary.