Multiple sclerosis Multiple sclerosis is an autoimmune disease of unknown etiology that is characterized by the progressive destruction of myelin and nerve fibers in the central nervous system, causing neurological symptoms in affected individuals (85)
It is typically supplied as a lyophilized powder to maintain stability and consistency in research settings
A lack of compressibility indicates the presence of a blood clot
Plasma levels of GHK decline with age, coinciding with the loss of regenerative capacity, making GHK-Cu a relevant target for age-related skin, hair, and tissue health applications
modest increases in prolactin and cortisol levels 1
To match the testing conditions during all visits, participants were asked to have a light breakfast (e.g., maximum 2 bread rolls, or 1 cup of rice and one egg or 1 small sausage)