Figure 4

The PIF mAb is specific. Biotin-labeled mouse, anti-PIF mAb was screened against 243 circulating human proteins using an array. PIF mAb did not react with any of the proteins except two, (left side) MIP-1 Delta and (right side) TIMP3, circled by arrow, which were <1% as compared with controls. The biotin labeled and spotted proteins act as positive control (highlighted in two rectangles on either side of the array).