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Effects of CA, RA, and CA + RA on viability of rat lung fibroblasts cells (A), L929 cells (B), rat alveolar Type II cells (C) and A549 cells (D). Data represent Mean±SD of 5 experiments for each cell type. Cells were treated with 100 μM RA, 20μM CA or with combination of 100 μM RA +20 μM CA (RC) for 24 hours. ***p<0.001 vs C, ###p <0.001 vs CA, §p<0.05 vs CA.
