The optic tracts of Rana pipiens.
D000818:Animals; D001001:Anura / Q000033:anatomy & histology*; D005075:Biological Evolution; D006652:Histological Techniques; D008297:Male; D009410:Nerve Degeneration; D009897:Optic Chiasm / Q000033:anatomy & histology*; D009899:Optic Lobe, Nonmammalian / Q000033:anatomy & histology*; D012104:Reptiles; D013045:Species Specificity; D013194:Staining and Labeling; D013788:Thalamus / Q000033:anatomy & histology*