Percentage of feline primordial follicles after culture with (+ Vitamin C) and without Vitamin C supplementation (control). The percentage of primordial follicles was determined in 40 follicles (%PF40) per ovarian cortex piece from domestic cats. Shown are the mean values at day 0, 2, 7 and 14 of culture. Number of measured follicles are indicated in white letters in the bars. Statistical differences between treatment groups at the same time point are marked with stars p < 0.01 (**), p < 0.001 (***). Different subscript (a, b, c) indicate for significant differences within the control group. Different subscript (x, y, z) indicate for significant differences within the Vitamin C supplementation group.