Frontiers Glycine Histidine Lysine (GHK) Alleviates Astrocytes Injury of Intracerebral Hemorrhage via the Akt miR 146a 3p AQP4 Pathway New Biotinylated GHK and Related Copper(II) Complex: Antioxidant and Antiglycant Properties In Vitro against Neurodegenerative Disorders 2021A12 Define the terms tolerance and tachyphylaxis. Discuss the different mechanisms by which tolerance can develop, giving examples where appropriate. Biological efficacy of GHK Cu after ionic liquid loading. (a) Cellular Download Scientific Diagram