Pentameric procyanidin from Theobroma cacao selectively inhibits growth of human breast cancer cells.
Ramljak D, Romanczyk LJ, Metheny-Barlow LJ, Thompson N, Knezevic V, Galperin M, Ramesh A, Dickson RB. Pentameric procyanidin from Theobroma cacao selectively inhibits growth of human breast cancer cells. . 2005 Apr; 4(4):537-46.