Affiliation: | From the ‡Institute of Medical Biology, 8A Biomedical Grove, 06-06 Immunos, Singapore 138648.;the §Department of Cell Biology and Cancer Center, University of Massachusetts Medical School, Worcester, Massachusetts 01655, and ;the ¶Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119074 |