References & Sources

The early fetus gets the womb

A fertilized egg has only 8 days to implant before chances of a successful pregnancy fall.

References:

Wilcox, A.J., et al. 1999. Time of implantation of the conceptus and loss of pregnancy. New England Journal of Medicine 340(June 10):1796.

Sources:

Allen J. Wilcox
National Institute of Environmental Health Sciences
Epidemiology Branch
MD A3-05
Research Triangle Park, NC 27709

From Science News, Vol. 156, No. 5, July 31, 1999, p. 78. Copyright © 1999, Science Service.