Kotake-Nara E, Asai A, Nagao A.Neoxanthin and fucoxanthin induce apoptosis in PC-3 human prostate cancer cells.ancer Lett. 2005 Mar 18;220(1):75-84. Akira Asai, Masaru Terasaki and Akihiko Nagao2 An Epoxide–Furanoid Rearrangement of Spinach Neoxanthin Occurs in the Gastrointestinal Tract of Mice and In Vitro: Formation and Cytostatic Activity of Neochrome Stereoisomers1 J. Nutr. 134:2237-2243, September 2004