Conflict of Interest X.Y. declare a competing financial interest as the cofounders and shareholders of NanoFCM Inc., a company committed to commercializing the nano-flow cytometry technology. Supporting Information Filename Description smll202310712-sup-0001-SuppMat.pdf14.5 MB Supporting Information References 1, , , , , , , , , , , , J. Extracell Vesicles 2021, 10, e12144. 2, , , Nat. Rev. Mol. Cell Biol. 2018, 19, 213. 3, , , , , , , , , , , , , , , Cell 2019, 177, 428. 4, , , , , , , , Acc. Chem. Res.