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found that GHK-Cu stimulated collagen synthesis by fibroblasts, noting that the presence of a GHK triplet in type I collagen meant that GHK may offer in situ healing effects [1, 6]

The flip side: the FDA cited limited human safety data when it placed DSIP on Category 2 in 2023

Figure EV6 Metabolic characterization of A549shNRF2-/H460shNRF2-BIND rescue cell models

Before biotinstreptavidin pulldown, magnetic streptavidin beads (Thermo Fisher Scientific, 88817) were washed three times in 0.2% SDS in 50 mM HEPES

Sublingual formulations (tablets that dissolve under the tongue) have not been proven to have superior absorption compared to standard oral tablets

12,13,14 NAD + has a short half-life, ~1 h in mammalian cells, 15 and limited ability to diffuse through cell membrane barriers