Box plot diagrams of SEPT9 methylation. Results from amplicons 4 and 5 in different LCM tissue specimens. Data are shown separately for stromal (str) and epithelial (epi) cells and for the three patients in each group. Red = epithelial cells, blue = stromal cells. The horizontal bar within boxes shows the median, dots within the boxes the means, the lower and upper boundaries of boxes show the 25th and 75th percentiles, the whiskers are determined by the 5th and 95th percentiles.