NCI-H226 cells were incubated with JMAM mAbs followed by staining with existing Abs already known to bind to mesothelioma [anti-calretinin, anti-podoplanin (D2-40), anti-GLUT-1, anti-CD25 (BC96), anti-CD26 (1F7, 5F8), anti-C-ERC/mesothelin (22A31)]. The gene discussed is DPP4; the disease is mesothelioma.