Z. Sun, Department of Biology, Yale University, New Haven, CT 06511, USA, and Department of Pathology, Yale School of Medicine, 310 Cedar Street, Room BML 342, New Haven, CT 06520–8023, USA. J. Hsiao, D. S. Fay, D. F. Stern, Department of Pathology,Yale School of Medicine, 310 Cedar Street, Room BML 342, New Haven, CT 06520–8023, USA.(1998-07-10時点)