title: Retinal projections in a snake, Thamnophis sirtalis.
mesh_terms: D000717:Anatomy, Comparative; D000818:Animals; D005075:Biological Evolution; D005829:Geniculate Bodies / Q000033:anatomy & histology; D008636:Mesencephalon; D009562:Nissl Bodies; D009897:Optic Chiasm; D009900:Optic Nerve / Q000033:anatomy & histology; D012160:Retina / Q000166:cytology; D012911:Snakes / Q000033:anatomy & histology*; D013477:Superior Colliculi / Q000033:anatomy & histology; D014795:Visual Pathways / Q000033:anatomy & histology*