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Long R3 insulin-like growth factor-I (IGF-I) infusion stimulates organ growth but reduces plasma IGF-I, IGF-II and IGF binding protein concentrations in the guinea pig

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Action: This long half-life allows it to drive muscle hyperplasia (new cell creation) and hypertrophy (cell size increase) over a sustained period by binding to the IGF-1 Receptor (IGF-1R) with high affinity

Stable for years under reasonable conditions

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