does ghk-cu cause receptor downregulation or tachyphylaxis Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy Angiotensin II Type 1 Receptor
Description
Bottom panel: The activity of natural killer cells (NK cell cytotoxicity) increased at weeks 2 and 4 for both the low-dose (gray bars) and high-dose (striped bars) groups

The peptide demonstrates optimal stability at pH 6.0-9.0, with pH 7.4 providing ideal conditions for most formulation approaches

doi: 10.3390/ijms18102137 99 SongBLiPYanSLiuYGaoMKLvHYet al

PMC 6210286
