The IIDP coordinates the distribution of human islets and non-islet biomaterials from the ten isolation centers listed below. Human islets, isolated from pancreata, and other tissues are procured from deceased organ donors with specified permission to be used for research purposes. The IIDP coordinates the dissemination of islets and non-islet biospecimens (NIB) through the self-developed, customized Matching Algorithm for Islet Distribution (MAID) to provide fair and equitable human islet allotment via our computerized Islet Allocation System (IAS). Centers input relevant donor data, isolation information, and islet quality assessments such as purity, viability, counts, index, and ranking into the IAS, and all information is broadcasted to the investigators chosen by the MAID system with notice of islet and tissue availability through email and/or text message. Accepted tissues are shipped to the researchers directly from the islet isolation centers with overnight delivery in the contiguous U.S. and within a few days, internationally. These ten islet isolation centers have extensive experience in isolating human islets and delivering a high-quality product to the research community.