Sagittal brain section of the nocturnal Chilean rodent Octodon lunatus. Brown staining correspond to the retinal ipsilateral projection in the lateral geniculate nucleus of the thalamus. (picture taken by Tomás Vega)

Fluorescent microphotography of the accessory olfactory bulb (AOB) of the Malagasy tenrec Echinops telfairi showing non exclusive glomerular segregation. Go-expressing glomeruli are shown in red and Gi-expressing glomeruli are shown in green. (picture taken by Rodrigo Suárez)

Piramidal neurons (picture taken by Felipe Fredes)