Anatomy of the telencephalon of the adult zebrafish. Schematic of transverse sections through the anterior (A) and posterior (B) zebrafish telencephalon indicating the different anatomical subdomains. Proliferative periventricular zones are indicated in green. Schematic was redrawn from . C: Radial glial cells have long processes that reach all the way to the pial surface. Immunostaining against GFP in the Tg(GFAP GFP) line marks the radial glial cells in the telencephalon of an adult zebrafish. The section was co-stained with the proliferation marker PCNA (proliferating cell nuclear antigen) to distinguish between PCNA-negative Type I and PCNA-positive Type II cells (described in ). Cantd: commissural anterior, pars dorsalis; Cantv: commissural anterior, pars ventralis; Dc: central zone of the dorsal telencephalic area (D); Dd: dorsal zone of D; DEL: dorsal ependymal lining; DiV: diencephalic ventricle; Dl: lateral zone of D; Dm: medial zone of D; Dp: posterior zone of D; Lot: lateral olfactory tract; ENd: entopeduncular nucleus, dorsal part; ENv: entopeduncular nucleus, ventral part; LFB: lateral forebrain bundle; Mot: medial olfactory tract; Ppa: anterior part of parvocellular preoptic nucleus; PVZ: periventricular zone; SY: sulcus ypsiloniformis; TelV: telencephalic ventricle; Vc: ventral nucleus of the ventral telencephalic area (V); Vd: dorsal nucleus of V; Vl: lateral nucleus of V; Vp: postcommissural nucleus of V; Vs: supracommisural nucleus of V; Vv: ventral nucleus of V.