1. Department of Chemical Engineering, The Ohio State University, Columbus, OH 43210.
2. Department of Chemical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL 32310
3. Department of Obstetrics and Gynecology (Laboratory of Perinatal Research), The Ohio State University, Columbus, OH 43210.
4. Department of Pathology and Internal Medicine, The Ohio State University, Columbus, OH 43210; American Red Cross, Richard M. Ross Cord Blood Bank, Columbus, OH 43205.