“P21 | EARLY BIOLOGICAL EFFECTS ON CELL PROLIFERATION AND DIFFERENTIATION INDUCED BY EXTRACELLULAR MICROVESICLES (EVS) DERIVED FROM HUMAN KERATINOCYTES IN PSORIATIC MICROENVIRONMENT: D. Daluiso1, B. Barco1, C. Porro2, E. Donetti3, F. Riva1 | 1Department of Publich Health, Experimental and Forensic Medicine, Histology and Embryology Unit, University of Pavia, Pavia, Italy; 2Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy; 3Department of Biomedical Sciences for Health, University of Milan, Milan, Italy” (2025) European Journal of Histochemistry, 69(s2). doi:10.4081/ejh.2025.4341.