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Put simply, just because the door hasn't been kicked in yet does not mean you are on the right side of it

Rosen et al., Patellar tendon straps decrease pre-landing quadriceps activation in males with patellar tendinopathy, Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine 24 (2017)

So the stress response pathway in this case is, uh, norepinephrine is elevated

Concentration Ranges: In vitro fibroblast studies have typically used GHK-Cu concentrations ranging from 1 nM to 10 M, with different effects observed across this range

More water creates more dilute solution