MGF (mechano growth factor) has been used  for a few years already. After resistance exercise, IGF-1 is released within the muscle. Specifically, at this time, immediately following the mechanical use of a muscle, the IGF-I gene is spliced towards MGF which initiates hypertrophy and repair of local muscle damage. It does so both by activating muscle stem cells and satellite cells, but also via various other anabolic processes. It differs from “regular” IGF-1 mainly due to it’s C-Terminal sequence.

In a rodent study, a single intramuscular injection into muscle resulted in a 25% increase in mean muscle fibre cross section area within three weeks.

CJC DAC used for purpose of performance enhancement,  it will promote anabolic activity, due to a stronger metabolism he is able to stay leaner when bulking than he may have otherwise.