![Examination of an extracellular vesicle preparation from the colon cancer cell line HTC116. Comparison between the total particle count (grey; 100%), CD9 positives (violet; 3%), CD63 positives (green; 19%), CD81 positives (blue; 21%) and the biological vesicle count (red; 93%)](https://particle-metrix.com/wp-content/uploads/2022/02/csm_Tetraspanin_1_b63f721e8f-300x207.jpg)
Identification of Exosomes using the tetraspanins CD9, CD63, CD81 and Particle Metrix ZetaView® fluorescent Nanoparticle Tracking (F-NTA)
Nanoparticle Tracking Analysis (NTA) has emerged as the state-of the-art method for size and concentration characterization of exosomes and extracellular vesicles.