Mitochondria morphology was analyzed in early (2- and 4-cell) and later stage (morula) SCNT and ICSI embryos. Round and elongated mitochondria were counted per section (nuclear or perinuclear region)
Note: Values are expressed as mean ± SD or percentage. Fertilization rate: two-pronuclear zygotes (2PNs)/total MII oocytes in ICSI cycle or fertilized oocytes/total oocytes in IVF cycle. Cleavage rate