EPCAM and cancer: Using an antibody against epithelial cell adhesion molecule (EpCAM), Rabinowits et al. enriched exosomes secreted by the respiratory epithelium into plasma in 27 cases of NSCLC (American Joint Committee on Cancer stages 1–4 ) and compared the levels of 12 microRNAs in the exosomes against those in nine healthy individuals by RT-PCR.