An injectable hydroxyapatite microsphere filler loaded with GHK Cu tripeptide for anti Inflammatory and antioxidant ScienceDirect Not too big. Not too small. Because of their intermediate size, macrocyclic peptides combine the potency and precise targeting of an antibody or biologic therapy with the stability and ease of administration of a Ghk Cu Tolerance Desensitization Effectiveness Loss Frontiers Glycine Histidine Lysine (GHK) Alleviates Astrocytes Injury of Intracerebral Hemorrhage via the Akt miR 146a 3p AQP4 Pathway