supporting cell olfactory epithelial supporting cell olfactory sustentacular cell olfactory epithelial support cell FMA:62302 olfactory epithelial supporting cell sustentaculocyte of olfactory epithelium ZFA:0009364 Olfactory epithelial support cell is a columnar cell that extends from the epithelial free margin to the basement membrane of the olfactory epithelium. This cell type has a large, vertically, elongate, euchromatic nucleus, along with other nuclei, forms a layer superficial to the cell body of the receptor cell; sends long somewhat irregular microvilli into the mucus layer; at the base, with expanded end-feet containing numerous lamellated dense bodies resembling lipofuscin of neurons. supporting cell of olfactory epithelium olfactory epithelial cell