Fig. 2. A, quantitative analysis of CDC34 protein expression in a set of sequentially diagnosed acute leukemia patients from the TCCC. All samples were run with the same pre-B-cell ALL sample in each gel, and CDC34 expression was normalized to ß-actin expression. {star}, the three pre-B-cell ALL samples from patients undergoing leukapheresis. B, quantitative analysis of CDC34 protein expression in a set of T-cell ALL samples from the POG. Also shown are three representative pre-B-cell ALL samples analyzed in A and three samples of FACS-sorted normal resting T cells.