Fig. 2
From: Quantitative immunoassay for mink immunoglobulin in serum and milk
Representative standard curve with seven twofold dilutions of the purified mink IgG standard fitted using a four-parametric logistic curve fit (y = b + (a − b)/(1 + xc)^d and R2 = 0.998). The y-axis displays the absorbance at 450 nm after subtraction of the absorbance at 650 nm. Mean ± SD for duplicate determinations of each concentration is indicated on a log-scale