6Herr C M ,Reed K C. Micromanipulation of bovine embryos for sex determination [J].Theriogenology,1991,35(1):45-54.
7Sotomaru Y ,Kato Y, Tsunoda Y .Production of monozygotic twins after freezing and thawing of bisected mouse embryos[J].Cryobiology,1998,37:139-145.
8Machaty Z,Paldi A,Csaki T,et al..Biopsy and sex determination by PCR of IVF bovine embryos[J].Journal of Reproduction and Fertility,1993,98:467-470.
9Chrenck P,Boulanger L,Heyman Y,et al..Sexing and multiple genotype analysis from a single cell of bovine embryo[J].Theriogenology,2001,55:1071-1981.
10Appa Rao K B C,Totey S M.Cloning and sequencing of buffalo male～specific repetitive DNA:sexing of in vitro developed buffalo embryos using multiplex and nested polymerase chain reaction[J].Theriogenology,1999,51:785-797.
