abnormal lung epithelium morphology abnormal bronchioalveolar stem cell morphology 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 2011-02-14T04:12:04Z abnormal BASCs csmith MPheno.ontology MP:0010828