Movie S2.

A dense neural network is present within the neonatal ovary. Animation of images taken with the Zeiss Z1 light sheet microscope of a cleared neonatal XX gonad stained with antibodies against the pan-neuronal marker TUJ1 (red) and the gonadal marker GATA4 (cyan). The video shows an animation of the optical sections and rotating views of 3D renders of the light sheet Z-stack.