Figure 1.

Box plots of (a) vascular endothelial growth factor (VEGF) and (b) basic fibroblast growth factor (bFGF) serum levels. The lower boundary of the box is the 25th percentile and the upper boundary is the 75th percentile. The bold line inside the box represents the median. * Cases with values more than 1.5 box lengths from the upper or lower edge of the box (extreme values). The largest and smallest observed values that are not extreme values are also shown (whiskers).