Banting and Best isolate an active form of this substance by ligating a certain duct in dogs.
A growth factor named after this substance has been shown to increase fat cell recruitment. Receptors of this substance are normally stored as tetramers whose two kinase domains come together in the presence of this substance. Banting and Best isolate an active form of this substance by ligating a certain duct in dogs. High levels of this substance cause the movement of GLUT4 proteins to cell membranes. The autoimmune destruction of a body's beta cells results in one disease associated with this hormone, and this hormone counteracts the effect of glucagon. For 10 points, name this hormone produced in the Islets of Langerhans that is lacking in diabetics.
A growth factor named after this substance has been shown to increase fat cell recruitment.
insulin [accept insulin like growth factor until "Banting"]