Akpaso, M.I., Igiri, A.O. and Odey, P.A. 2017. A Comparative Study on the Effect of Combined Methanolic Leaf Extracts of <i>Vernonia amygdalina</i> and <i>Gongronema latifolium</i> and Metformin on the Pancreatic beta cells of Streptozocin Induced Diabetic Wistar Rats. Asian Journal of Pharmacy, Nursing and Medical Sciences. 5, 2 (Apr. 2017). DOI:https://doi.org/10.24203/ajpnms.v5i2.4591.