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Correlation of total volume per well and dye concentration with relative fluorescence units (RFU) (A) and relative absorbance units (RAU) (B) for resazurin (res) and XTT dyes, respectively. Higher volumes per well and dye concentrations resulted in higher sensitivity of resazurin and XTT, denoted by higher RFU and RAU readings, respectively. Each point represents a mean of 6 values derived from two independent sets of experiments. The error bars represent standard errors.
