The activity of lactate dehydrogenase (LDH) was measured using a lactate dehydrogenase activity assay kit (Sigma) as described earlier [16 (link),17 (link),18 (link)]. A volume from the MTT assay was used and plated in a 96-well plate. An LDH master mix was prepared and added to each well. The reaction was carried out at room temperature in the dark. The resultant absorbance was measured at 450 nm with the Thermo-Fisher Multiskan MCC plate reader (Fisher).
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