Antiproliferative Activity of Violaxanthin Isolated from Bioguided Fractionation of Dunaliella tertiolecta Extracts oleh Laurent Picot, Thierry Patrice, Jean-Paul Cadoret, Jean-Marie Piot, Mathieu Lafferriere, Isabelle Lanneluc, Valerie Thiery, Raymond Kaas, Jean-Baptiste Berard, Benoit Serive, Lucie Aumailley, Said Ihammouine, Amandine Chepied, Virginie Pasquet, Perrine Morisset