Low oxygen tension increases mitochondrial membrane potential and enhances expression of antioxidant genes and implantation protein of mouse blastocyst cultured in vitro

Table 2 Both blastocyst development and hatch rates were higher in embryos cultured in 3% O₂ than in 20% O₂

Oxygen concentration	3% O₂	20% O₂	P value*
No. 2-cell embryo	185	189
No. Blastocyst(%)	167(92.3)	150(79.4)	0.0033
No. Hatching blastocyst(%)	148(80)	133(70.4)	0.0074

ISSN: 1757-2215