A new international study led by Prof. Carmit Levy of the Department of Human Genetics and Biochemistry at the Gray Faculty of Medical & Health Sciences at Tel Aviv University finds that melanoma cancer cells paralyze immune cells by secreting extracellular vesicles (EVs), which are tiny, bubble-shaped containers secreted from a given cell. The research team believes that this discovery has far-reaching implications for possible treatments for the deadliest form of skin cancer.