Cytotoxic activity and antioxidant capacity of purified lichen metabolites: an in vitro study - Brisdelli, F; Perilli, M; Sellitri, D; Piovano, M; Garbarino, J A; Nicoletti, M; Bozzi, A; Amicosante, G; Celenza, G (Phytother Res, 2013)