Effect of prenatal exposure to DEHP on the percentage of follicle types per ovary. At 1 year of age, ovaries from the F1, F2, and F3 generations were subjected to histological evaluation for the percentage of each follicle type. Follicles in each generation [F1 in (A), F2 in (B), and F3 in (C)] were counted and separated by stage of development, and percentages of each follicle type were calculated for each treatment group. Graphs represent means ± standard error of the mean from four to six females per treatment group in the F1 generation, three to five females per treatment group in the F2 generation, and three to five females per treatment group in the F3 generation. *Significant differences compared with the control (P ≤ 0.05); ^borderline significance compared with the control (0.05 < P < 0.1).