Effect of retinoic acid on hyperoxia-induced expression and regulation of matrix metalloproteinase-2 and tissue inhibitor of metalloproteinase-2 in premature rat lung fibroblasts
Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.E-mail:lwchang@tjh.tjmu.edu.cn