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The gut contributes to the maintenance of the defense and repairs the gastrointestinal mucosa [33]

Later research showed that GHK-Cu levels in human blood drop from roughly 200 ng/mL at age 20 to about 80 ng/mL by age 60, a decline that tracks with slower wound healing, thinner skin, and reduced tissue repair

Canonical correlation analysis (CCA) was used to investigate the associations between two sets of variables, with symptoms 34 months following the acute phase serving as the dependent variable set and both biomarkers of the acute and Long COVID phases as the explanatory variable set

78 JozefczakM.RemansT.VangronsveldJ.CuypersA