LECs treated with different concentrations of curcumin for 48 h were collected and washed with PBS; cell apoptosis and cell cycle were analyzed by flow cytometry (Millipore, Darmstadt, Hesse, Germany) with the MultiCaspase Kit and the Cell Cycle Kit (Millipore, Darmstadt, Hesse, Germany). All procedures were proceeded according to the manufacturer's protocols as we previously did [21 (link), 22 (link)]. The statistical analysis was performed with the software version 1.3 of the Muse™ Cell Analyzer (Millipore, Darmstadt, Hesse, Germany).
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