*2.9. Dynamic Light Scattering Analysis and* ζ*-Potential Investigation*

The hydrodynamic diameter (size), the size distribution and the colloidal stability of the liposomal formulations were detected using a Zetasizer Nano ZS, Malvern Instruments Ltd., Worcestershire, UK (DTS 5.00), as previously reported [20]. Three measurements were performed on at least three different batches of each vesicles formulation, and results are reported together with the corresponding standard deviation.
