| Obsolete | false |
| description | A respiratory epithelial cell derived from a basal cell, with a topographic nuclear position between the basal and luminal cells of the airway epithelium. This non-basal, intermediate progenitor cell has limited proliferative capacity and can differentiate into multiciliated, secretory, or rare airway cells (ionocytes, tuft cells, neuroendocrine cells). It shares some ultrastructural features with basal cells but lacks the defined characteristics of fully differentiated cellular phenotypes. |