addition to its IGF-I receptor domain which then in turn increases protein synthesis turnover, and therefore can if used correctly improve muscle mass over time.
However, MGF only lasts for abou 5 - 7 minutes before it breaks down in the blood stream. Due to such a short half life, MGF is not widely used. Then, an additive Polyethylene Glycol (PEG) is added to the MGF, making it to be PEG-MGF. PEG acts as a protective coat and it will allow the MGF to be carried through the blood stream without