By flow cytometry, EpCAM+ MPs were detected in 79% (34/43) of carcinoma pleurisies with 221 [42–670] EpCAM+ MPs/μl compared to only 1 out of 27 patients with non-carcinoma malignant pleurisies with a very low number of EpCAM+ MPs (11 MPs/μl) (Figure 3A). The gene discussed is EPCAM; the disease is carcinoma.