Gallery of SOM portraits of the individual volunteers: Each row refers to one proband (P1 to P6) and each column to one time point of sample collection. Empty positions in the matrix refer to missing data because no samples were collected. The blue, green and red frames include samples showing the characteristics of early, intermediate and late responses, respectively. Note that the SOM textures cannot be directly compared to the textures of the mean volunteer analysis (shown in Figure 1) because both sets of maps are trained independently. Note that three out of five urine samples taken from proband no. 5 (P5) and possibly one taken from P6 before starting isolation express proteomics characteristics observed apart from that in the samples of all volunteers in the late time range only (see the red frames for P5).