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[\SHINE/]

Although this may have little to do with the matter of building muscle, I thought this article to be particularly insightful on IGF-1 LR3 in particular.


http://endo.endojournals.org/cgi/content/full/139/5/2356

that LR3 IGF-1 and Des(1-3)IGF-1 have a more profound impact on connective tissue regeneration (the ECM, and cartilage) than regular introduced IGF-1 because of thier low affinity to the IGF-1 Binding Proteins
Now that's a good thing.