EPCAM and cancer: Common exosome markers, such as CD9, CD63, and CD81 [73,74], are being used for the non-specific exosome capture, either functionalized onto a channel surface or onto magnetic beads, as seen for CTCs entrapment systems, whereas cancer-associated exosomes can also be specifically secluded using EpCAM [75,76], CD24 [77], and CD37 [78] among others.