Synergistic effects of glutathione and β-mercaptoethanol treatment during in vitro maturation of porcine oocytes on early embryonic development in a culture system supplemented with L-cysteine. - Choe C; Shin YW; Kim EJ; Cho SR; Kim HJ; Choi SH; Han MH; Han J; Son DS; Kang D (The Journal of reproduction and development, 2010)