Fig. 5From: Innovative multi-protectoral approach increases survival rate after vitrification of ovarian tissue and isolated follicles with improved results in comparison with conventional methodAnalysis of DNA fragmentation in sections of sheep ovarian tissue using the TUNEL apoptosis detection kit. Positive control sample after the treatment with DNAse I (a); negative control sample with omitted terminal deoxynucleotidyl transferase enzyme (b); sample tissue with apoptotic follicles showed by arrows (c and d). TUNEL signal showed with green color, Propidium Iodine staining showed with red colorBack to article page