Cellular Morphine Tolerance Produced by Arrestin 2 Dependent Impairment of Opioid Receptor Resensitization Journal of Neuroscience Chronic UCN2 treatment desensitizes CRHR2 and improves insulin sensitivity Nature Communications 2 weeks in on GHK Cu and the glow is REAL., Brighter complexion, More even skin tone, Less breakouts, Softer fine lines, Thicker, fuller hair, This is just the beginning. Consistency is Copper Peptides for Effective Hair Growth GzESTY as an optimized cell based assay for initial steps in GPCR deorphanization Nature Communications The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline