“…We used here human lung tissue-derived epithelial cell line and type II pneumocyte lung tumor all in one by Giard et al (1973) . In previous studies, A549 cell line has been used in in vitro cell systems and toxicology studies because of characteristic features of AT II cells including production of surfactant proteins, synthesis of phospholipids, cytoplasmic lamellar bodies, and apical microvilli ( Lee S. et al, 2017 ; Kim et al, 2018 ). However, they have important limitation to characterize other in vitro lung cell biology because of distinct difference including the architecture, barrier properties, lipid content and transition to ATI-like phenotype from those of primary AT II cells ( Lieber et al, 1976 ; Mason and Williams, 1980 ; Salmona et al, 1992 ; Godfrey, 1997 ).…”