Hetero Sandwich Immunoassay as Tool to Probe the Composition of the Extracellular Vesicles Membranes: The Case Study of L1CAM Localization - Helena Mateos; Antonia Mallardi; Esther Serrano-Pertierra; Maria Carmen Blanco-López; Maria Liguori; Ylenia Antonacci; Michele Casiello; Gerardo Palazzo (ACS Omega)