Cell viability was assessed using an MTT assay one day following treatment. For the assay, MTT reagent was diluted 10-fold into complete medium and incubated with cells in 96 well plates for 2 h. Absorbance was then analyzed at 490 nm using a multi-plate reader (Synergy 2, Biotek), blank-subtracted and normalized to the untreated cell values to give relative cell viability.
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