IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS) e-ISSN: 2278-3008. Volume 5, Issue 5 (Mar. – Apr. 2013), PP 07-13 www.iosrjournals.org Phytochemical Composition of Cassia Alata Leaf Extract and its Effect on the Histology of the Pancreas of Diabetic wistar Rats Chisom Favor Eliakim-Ikechukwu1, * Asukwo Asukwo Edem2, Uduak Monday William3,