Principal component analysis (PCA) of data obtained by the quantitative analysis of PND21C animals. Units: body weight (BW) per day. In all cases, we represent only the mean of each exposure group. (A) Dim 1 (correlated to the size) and Dim 2 (). (B) Dim 2 () and Dim 3 () Ellipses show some confidence intervals, and the variability of the data remains high. Number of animals per group . Note: BPA, bisphenol A; Control, vehicle control; Dim, dimension; EE2, ethinyl estradiol.