IGF-1 DES is a truncated, natural version (splice variant) of insulin-like growth factor-1. IGF-1 DES stimulates hypertrophy and hyperplasia of a number of different cell lines. Research has shown this version of the protein to be more potent than standard IGF-1, mostly as a result of its enhanced bioavailability. Like all IGF-1, promotes the repair of muscle and connective tissue.
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