Rat: E16-hor-339 1 = IV Ventricle,  2 = IV Ventricle,  3 = Metencephalon,  4 = Plexus choro&uiuml;dea,  5 = Metencephalon,  6 = III Ventrikel (Diocoel),  7 = Diencephalon,  8 = Lateral ventrikel,  9 = Telencephalon. Rager staining. Horizontal section acquired with a 2.5x objective

http://www.vcbio.science.ru.nl/en/virtuallessons/embryology/rat-E16-hor-339/print/