abnormal olfactory epithelium morphology abnormal horizontal basal cell morphology 2013-08-10T10:56:08Z MP:0012069 MPheno.ontology abnormal basal proper cell of olfactory epithelium morphology abnormal horizontal basal cells any structural anomaly of the flat or angular epithelial cell with condensed nuclei and darkly staining cytoplasm containing numerous intermediate filaments inserted into desmosomes contacting surrounding supporting cells, that lie in contact with the basal lamina of olfactory epithelium csmith