Effect of a polysaccharidic fraction of Agaricus blazei on colorectal carcinogenesis in rats with ulcerative colitis - Lopes, Fabiane Catanho [UNESP]; Eira, Augusto Ferreira da [UNESP]; Barbisan, Luís Fernando [UNESP]; Kaneno, Ramon [UNESP] (Universidade Estadual Paulista (Unesp), 2005)