Label exosomes with GFP by expressing the pCT-CD63-GFP Cyto-Tracer in the parent cells. Great for tracking exosomes and monitoring cargo delivery. Monitor exosome dynamics with the pCT-CD63-GFP (pCMV) Exosome Cyto-Tracer (also available as a CD63-RFP fusion, pCT-CD63-RFP). Provided as either lentivector or pre-packaged virus, this Cyto-Tracer fuses GFP to the tetraspanin CD63, which then gets packaged into exosomes produced by the transfected cells. Great for creating stable cell lines that produce GFP-labeled exosomes as well as labeling exosomes from primary cells, tumor cells, stem cells, and more.