Immediately
after placing the ovary sclies on induction medium which was
basal MS medium by adding 0.02 mg/L TDZ, they were exposed to
thermal shock pretreatment at 35 8C for 2, 3 and 4 days. After the
35 8C pretreatment, all ovaries initially treated at 35 8C were
transferred to 25 8C for further culturing.