Figure 1

IHC of fresh-frozen malignant pleural mesothelioma patient sections. A, c and e were stained with the FAP recognizing murine F19 antibody, whereas b, d, f represent the secondary system only. All three histosubtypes of MPM have been analyzed: epithelioid (a, b), sarcomatoid (c, d) and bi-phasic (e, f). Regions marked with * indicate areas of predominant tumor cell location.