A neuroendocrine cell found in the epithelium of the lungs and respiratory tract. This cell type is rounded or elliptical in shape, situated mainly in the basal part of the epithelium; regulates bronchial secretion, smooth muscle contraction, lobular growth, ciliary activity and chemoreception. Cell has an electron-lucent cytoplasm, contains numerous dense-cored vesicles with a clear halo between the core and the limiting membrane. [ GOC:tfm http://openisbn.com/search.php?q=0412046911&isbn=1/ http://openisbn.com/search.php?q=0517223651&isbn=1/ ]