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Lee JW, Tian XC, Yang X.Lee JW, et al. Among authors: tian xc.Biol Reprod. 2003 Apr;68(4):1341-7. doi: 10.1095/biolreprod.102.009001. Epub 2002 Oct 30.Biol Reprod. 2003.PMID: 12606424
Roach M, Wang L, Yang X, Tian XC.Roach M, et al. Among authors: tian xc.Methods Enzymol. 2006;418:21-37. doi: 10.1016/S0076-6879(06)18002-7.Methods Enzymol. 2006.PMID: 17141027