MET and pemphigus foliaceus: In addition, c-MET is known to be essential for the maturation and regeneration of epithelial cells in other models of tissue injury and regeneration, and, in fact, we also found an increase in c-MET expression in lung epithelial cells after BLM administration, whereas no expression was detected in lung endothelial cells throughout the inflammatory phase of the BLM-induced PF mouse model (Fig. S3).