Rat: E16-hor-689 1 = Spinal cord,  2 = Spinal ganglion,  3 = Regio epiglottis,  4 = Tongue,  5 = Oral cavity,  6 = Eye formation,  7 = Olfactory epithelium,  8 = Bulbus olfactoris,  9 = Hyoid bone? Rager staining.Horizontal section acquired with a a 2.5x objective

http://www.vcbio.science.ru.nl/en/virtuallessons/embryology/rat-E16-hor-689/print/