This route dependence is why GHK-Cu dosage cannot be expressed as a single universal figure
Whichever format you're considering, that distinction is the one worth remembering
Key Takeaways: NAC is converted to glutathione inside cells, with 70% stability during digestion
They are complex structures in which cells (in many cases of different species) are embedded in the material that they secrete, the extracellular matrix (ECM), which is composed of proteins, carbohydrates, lipids, and nucleic acids
Quinlan et al., 2013), complex I and complex III (Venditti et al., 2013) have been shown to be the most important sources of mitochondrial superoxide generation, although significant production of ROS in complex II has recently also been reported (Quinlan et al., 2012)