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TB500 also regulates the cell-building protein Actin, being a critical component of cell structure

In a separate study, the actions of GHK-Cu on type 4 collagen fibers were explored

doi: 10.1016/j.crneur.2022.100028 394 YanX.KusterD.MohantyP.NijssenJ.Pombo-GarcaK.Garcia MoratoJ.et al

You should keep in mind that cited references to ongoing nutritional scientific study are most likely not accepted by the FDA as conclusive
