title: The relationship between the ovary and the corpuscles of Stannius of the catfish Ompok bimaculatus (Bloch).
abstract: The corpuscles of Stannius (CS) of Ompok bimaculatus showed signs of inactivation as revealed by a significant decrease in cellular and nuclear diameters (P less than 0.001) 10 days after ovariectomy. This was accompanied by accumulation of aldehyde fuchsine-positive granules in the cytoplasm. Estradiol injection partially restored the normal secretory activity of the CS cells. Estradiol administration to unoperated normal fish led to hyperactivity of the CS cells including increased cellular and nuclear diameters (P less than 0.001) and depletion of granules from the cytoplasm.
mesh_terms: D000818:Animals; D002397:Catfishes / Q000502:physiology*; D002467:Cell Nucleus / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D004702:Endocrine Glands / Q000187:drug effects / Q000502:physiology* / Q000648:ultrastructure; D004958:Estradiol / Q000494:pharmacology; D005260:Female; D007668:Kidney; D010052:Ovariectomy; D010053:Ovary / Q000502:physiology*; D013194:Staining and Labeling
chemical_list: D004958:Estradiol