FIGURE 1.

Scheme of the study design. VFF, vapour fast freezing; VIT, vitrification. Method1: thawing, washing, centrifugation and evaluation; Method 2: thawing, evaluation

Scheme of the study design. VFF, vapour fast freezing; VIT, vitrification. Method1: thawing, washing, centrifugation and evaluation; Method 2: thawing, evaluation