grants from Major State Basic Research Development 973 Program of China(No.2001CB510008 and 2003CB514113);NSFC & Research Grant Coancil of Hong Kong Joint Research Fund(No.30418003).
Background Recent studies have suggested that mature T cells can change their specificity through reexpression of recombination-activating genes (RAG) and RAG-mediated V(D)J recombination. This process is named re...