1. Fraser Laboratories (Y.G., Y.L., K.R., Z.T., Y.L.L., J.-L.L.), Department of Medicine, McGill University, Montreal, Quebec, Canada H3A 1A1
2. Transgenic Unit (D.H.), Montreal General Hospital Research Institute, Montreal, Quebec, Canada H3G 1A4
3. Edison Biotechnology Institute and Department of Biomedical Sciences (J.J.K.), College of Osteopathic Medicine, Ohio University, Athens, Ohio 45701