abnormal solitary pulmonary neuroendocrine cell morphology increased solitary pulmonary neuroendocrine cell number 2011-03-10T03:51:46Z CL:0002066 FMA:14118 MP:0010915 MPheno.ontology csmith increased Feyrter cell number increased Kulschitzky cells increased Kultschitzky cell of bronchiole number increased P cell number increased PNECs increased bronchiolar Kulchitsky cell number increased number of the specialized non-ciliated, round- to oval-shaped epithelial cells found as solitary cells in the nasal respiratory epithelium and the mucosa of the larynx, trachea and bronchi up to the terminal bronchioles; PNECs are the first cell type to differentiate during early fetal lung development, produce amine (e.g. serotonin, 5-HT) and peptides (e.g. bombesin, calcitonin) with growth factor-like properties, and appear to be involved in processes ranging from lung development and respiratory physiology to repair, disease and carcinogenesis increased respiratory enterochromaffin cell number increased single pulmonary neuroendocrine cell number