Comparison of Western blot densitometry and SELDI peak intensity. (A) A Western blot illustrating the differential expression of S100A10 derived from cell lysates of 8 CRC cell lines (a). SELDI-TOF MS gel view (b) and mass peak (c) illustrating the differential expression of the protein at m/z 11,072 in cell lysates from 8 CRC cell lines. The results are representative of three separate experiments. (B) The results of Western blot densitometry of S100A10 significantly correlated with the SELDI peak intensity at m/z 11,072. Twenty-four experimental data points (3 separate experiments with each of 8 cell lines) are plotted.