Fig. 1From: Cell-free therapy with the secretome of adipose tissue-derived stem cells in rats’ frozen-thawed ovarian graftsAssessment of follicular viability by trypan blue staining. Photomicrograph of viable ovarian follicles stained with white (a) and of nonviable follicles stained with blue (b). Blue arrow: trypan blue crystals. Red arrow: blood cells. × 200. Percentages (c) and mean number ± standard deviation (d) of viable ovarian follicles in fresh and thawed tissue after isolation and trypan blue staining. p > 0.05, paired t testBack to article page