Successful Isolation and Transplantation of Nonhuman Primate Islets Using a Novel Purified Enzyme Blend by Jessica Helweg | Jan 4, 2017 Abouaish J, Graham M, Bansal-Pakala P, Loganathan G, Soltani SM, Tiwari M, et al. Successful isolation and transplantation of nonhuman primate islets using a novel purified enzyme blend. Transplantation. 2011;92(8):e40-e2.