CD8A and neoplasm: The white signals of EV-originated green Thy-1.1 merged with purple CD140a+ Sca-1+ MSC areas were frequently observed in GW4869-untreated Thy-1.1+ DUC18 CD8+ T cell-infiltrating CMS5a tumours (Fig. 6d), demonstrating tumour-infiltrating CD8+ T cell-derived EV uptake by tumour mesenchymal cells.