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Grade C evidence consists of case reports, animal model studies, and in vitro investigations providing preliminary but limited human relevance (83)

Comparative analysis with other antioxidant peptides and molecules suggested that GHK might indicate a higher relative affinity for hydroxyl radical neutralization under laboratory settings

Its versatility makes it a key tool in preclinical studies investigating tissue recovery and structural health

Further, it may impact pathways associated with sleep dysregulation in research models in laboratory trials

This approach may be particularly valuable in studies examining how different signaling systems overlap during regeneration and structural remodeling