5Simpso174n JL, Elias S. Isolating fetal cells from maternal blood: advances in prenatal diagnosis through molecular technology [J]. JAMA, 1993, 270: 2357~2361.
6Benirschke K. Anatomical relationship between fetus and mother. In: Simpson JL, Elias S. Eds. Fetal cells in maternal blood: prospects for noninvasive prenatal diagnosis [J] . New York: New York Academy of Science, 1997, 731: 9~20.
7Cheng MC, Goldgerg JD, Kan YW. Prenatal diagnosis of sickle lell disease and thalassacmia by analysis of fetal cells in maternal blood [J]. Nature Genet, 1996, 14(3): 264.
8Geifman-Holtzman 0, Bernstein IM, Berry SM, et al.Fetal RhD genotyping in fetal cells flow sorted from maternal blood [J] . Am J 0bstet Gynecol, 1996, 174(7): 818~822.
9Wachtel, Sammons, Manley, et al. Fetal cells in maternal blood: Recovery by charge flow separation. Hum [J] . Genet, 1996, (98): 162~166.