PCNA and Hyperglycemia: As expected, chronic hyperglycemia resulted in a lower number of PCNA-positive cells in the dorsomedial telencephalon (Dm), the anterior part of the preoptic area (PPa), the periventricular pretectal nucleus (PPv), two caudal hypothalamic regions (Hv LR and LR PR) and the valvula of cerebellum (VCe) compared to control fish (Figures 12B-D).