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GHK-Cu has been the subject of an extensive preclinical literature spanning dermal-matrix research, wound-healing models, hair-follicle research, antioxidant chemistry, and gene-expression profiling
This type of injection is best administered in the upper arm
However, it's not entirely clear whether high vitamin B12 blood levels cause PV or the PV disease process may result in high blood levels of vitamin B12
The RDA for vitamin B12 ranges from 2.4 mcg for adults to 2.8 mcg during breastfeeding
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