The cell coat of the developing olfactory epithelium in the chick

Summary During development of the olfactory epithelium in the chick embryo, the cell coat is revealed by treatment with Ruthenium red. On day 4 of incubation the developing sensory epithelium displays a thicker apical and basal cell coat than the neighbouring head ectoderm. The lateral cell coat is of equal thickness in both epithelia. The apical cell coat of the olfactory epithelium increases in thickness from day 4 to day 19 of embryonic life, finally attaining a thickness of about 55 nm.This paper is dedicated to Dr. A.J. ZamoraPortions of this paper were taken from the thesis by the author in fulfilment of the requirement for the degree of Dr. rer. nat. at the University of Essen Supported by the Deutsche Forschungsgemeinschaft (SFB114)