In Experiment 3, the protective effect of 0.5% sericin
on H2O2-induced DNA damage in blastocysts was
assessed. Two-cell-stage embryos were exposed to 100
M H2O2 in the CR1aa medium with or without (control)
0.5% sericin for 7 days. After culture, blastocysts
were fixed and submitted for DNA-fragmentation evaluation
using the TUNEL technique