The glucocorticoid receptor(GCR)in white blood cell was measured in 44 renal allograft recipients in the first postoperative month.With the use of glucocorticoid,GCR level decreased evidently in stable renal function group(520±340 loci/cell).During glucocorticoid sensitive acute rejection the GCR level increased (GCR=2130±970 1oci/cell,P