Selektivdarstellung der Riechsinneszellen des Zwergwelses Ictalurus nebulosus mit Procionfarbstoffen / Selective Staining by Procion Dyes of Olfactory Sensory Neurons in the Catfish Ictalurus nebulosus

Abstract

Abstract Procion Brilliant Yellow M 4RAN and Procion Yellow M 4R applied to the catfish olfactory mucosa stain intra-vitally and enter the olfactory receptors by their dendrites. The dye invades the receptor pericaryon and subsequently migrates within the axon in distal direction. Fluorescence microscopy of aldehyd fixed and paraffin sectioned preparations reveals clear selective staining of the sensory neu­ rons in yellow colour.