Abnormal cell morphology Abnormal buccal mucosa cell morphology 2017-09-17T22:04:47Z Any structural anomaly of the cells of the mucosa of the oral cavity in the region of the cheek (buccal mucosa cells). Buccal mucosa cells are easy to obtain and are a useful model of some other diseases. For instance, muccal mucosa cells from arrhythmogenic cardiomyopathy patients exhibit changes in the distribution of cell junction proteins similar to those seen in the heart.