Wilkins E S, Grainer J L, Wilkins M G
Experientia. 1977 Aug 15;33(8):1028. doi: 10.1007/BF01945949.
The carotenoid crocetin (earlier found to increase relative growth of Walker 256 tumor cells and their radiosensitivity), is shown to increase the relative growth of normal Sprague-Dawley rat muscle derived cells in vitro, presumably by increasing oxygen transport.