Investigation of the ovarian chromaffin tissue in the fresh water teleost fishes.
D000818:Animals; D002838:Chromaffin System; D004759:Enterochromaffin Cells; D005260:Female; D005399:Fishes / Q000033:anatomy & histology*; D005618:Fresh Water; D010053:Ovary / Q000166:cytology*; D013194:Staining and Labeling