start stage end stage diencephalic white matter commissure of the caudal tuberculum CPT Ctub zebrafish_anatomy commissure of the posterior tuberculum TAO:0000491 commissura tuberculi posterioris ZFA:0000491 Commissure in the ventral diencephalon that lies rostral to the ventral flexure and caudal of the posterior tuberal nucleus. Axons from the supraoptic tract extend across the hypothalamus and enter this commissure. pharyngula:prim-5 adult