Figure 11. Senescence-associated β-galactosidase activity in MRC-5 (A) and H8F2p25LM (B) cells treated with hydrogen peroxide and posttreated with investigated compounds. Fluorescence value of control samples at 24-hour time point was considered 100% for each series. Data are presented as mean ± SD of 6 (MRC-5) or 2 (H8F2p25LM) independent experiments.