has part has part has_part characteristic of olfactory receptor cell abnormal olfactory receptor morphology abnormal odorant receptors abnormal odourant receptors any structural anomaly of the proteins, usually projecting from the cilia of olfactory receptor neurons, that specifically bind odorant molecules and trigger responses in the specialized neurons of the olfactory epithelium MPheno.ontology MP:0001003 abnormal olfactory sensory neuron morphology