Before revision: While generally efficacious in the treatment of diabetes, animal-derived insulin is not indistinguishable from human insulin, and may therefore produce allergic reactions.Brar, Deepinder: "The History of Insulin" URL accessed June 14, 2006 Genentech researchers produced artificial genes for each of the two protein chains that comprise the insulin molecule.
After revision: ,While generally efficacious in the treatment of diabetes, animal-derived insulin is not indistinguishable from human insulin, and may therefore produce allergic reactions.Brar, Deepinder: "The History of Insulin" URL accessed June 14, 2006 Genentech researchers produced artificial genes for each of the two protein chains that comprise the insulin molecule.