LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Insulin-like growth factor 2 molecule. Computer model showing the structure of a molecule of the hormone insulin-like growth factor 2 (IGF-2). IGFs are polypeptides that are similar in their molecular structure to insulin. IGF-2 is secreted by the brain, kidney, pancreas and muscle in mammals, and is thought to be important for early foetal growth and development during pregnancy.
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