abnormal lung epithelium morphology abnormal bronchioalveolar stem cell morphology 2011-02-14T04:12:04Z MP:0010828 MPheno.ontology abnormal BASCs any structural anomaly of a respiratory stem cell found at the junction of the terminal (conductive) bronchiole and the respiratory bronchiole, which gives rise to alveolar cell types and Clara cells in response to lung injury csmith