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The pro-alpha3(V) collagen chain: complete primary structure, expression domains in adult and developing tissues, and comparison to the structures and expression domains of the other types V and XI procollagen chains

10.1016/j.rmed.2018.09.016 Respir Med

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Data on the full protein do not automatically describe the marketed fragment

The first move is almost never increase the dose for an anchor like GHK-Cu, consistency beats magnitude

This pattern is not unique to NAD+, as other nutrients or supplements have experienced similar cycles of hype, backlash, and eventual clarification through further, more rigorous research