Cells were plated onto 96-well plates at seeding densities of 6.5 × 103 cells per well for PA-1, H1299 and SiHa cells and 7 × 103 cells per well for D54MG cells. The cell viability after treatment with appropriate agents was measured using Thiazolyl Blue Tetrazolium Bromide (MTT, Sigma) as previously described [17 (link)]. Concentrations of DHA that produced 50% inhibition in cell survival (IC50) following a 24 h exposure, were manually derived from dose–response curves generated by the Microsoft Excel 2010 edition.
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