Background: To determine potential effects of autophagy activation on hypoxia-reoxygenation (H/R) induced damage of a rat alveolar epithelial cell line. Methods: CCL149 cells were subjected to autophagy agonist (rapamycin. Rap). autophagy inhibitor (3-methyladenine. https://www.chiggate.com/3m-speedglas-9002nc-welding-helmet-fashion/