Fig. 6. (A) Oocyte diameter and proportion of cuboidal cells in transitional follicles on days 12 (open circles, dotted line) and 21 (filled circles, continuous line). Lines are linear regression fits with no significant slope and no difference between days 12 and 21. (B,C) Oocyte diameter (B) and number of GCs (C) are similar in Ki67-negative (open bars) and Ki67-positive (hatched bars) primordial follicles on days 12 and 21. Values are presented as the mean ± 95% confidence interval.