Fig. 1.

Embryos were incubated for 3 h in PBSs with various pH and cultured in MEF, HEF, HTF and MEM-α for 120 h. Experiments were replicated 7 times. Day 3, 4 and 5 are days at which embryos cleaved to morulae, expanded blastocyst and hatching or hatched blastocyst respectively. Figures are showing developmental rates in each group. *P < 0.05