1. Perinatal Research Laboratories,Departments of Obstetrics/Gynecology (T.D., J.A.S., R.R.M.), University of Wisconsin-Madison, Madison, Wisconsin 53715
2. Meat/Animal Sciences (R.R.M.), University of Wisconsin-Madison, Madison, Wisconsin 53715
3. Center for Perinatal Biology (L.Z.), Loma Linda University School of Medicine, Loma Linda, California 92350