Regeneration of the neurosecretory tract in hypophysectomized catfish Ompok bimaculatus (Bloch)--an in situ study.

Regeneration and reorganization of the proximal cut end of the pituitary stalk is demonstrated in Ompok bimaculatus with the aid of in situ staining technique. The lesioned end exhibited an increase of axonal density and some axons became prominent by their uncontrolled growth. In few instances the cut ends were reorganized into a neurohypophysis-like organ.