1. Department of Anatomy and Physiology, Kansas State University College of Veterinary Medicine, Manhattan, Kansas.
2. Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas.
3. Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Tokyo, Japan.
4. Department of Cell and Neurobiology, Keck School of Medicine, University of Southern California, Los Angeles, California.
5. The Midwest Institute of Comparative Stem Cell Biology, Kansas State University, Manhattan, Kansas.