GHK-Cu references: every waypoint, marked to its study

How to read this GHK-Cu reference list

These are the GHK-Cu references cited across the digest, numbered to match the inline markers on every page. Each entry gives the study, its journal and year, and a DOI plus a PubMed or PMC link. The list is deliberately short and deliberately exact: fifteen primary studies and reviews chosen because the rest of the site cites them, not to pad a bibliography. Where a claim on another page carries a bracketed number, this is the study it points to. The honest caveats noted throughout — no validated human pharmacokinetics, small human sample sizes, a foundational literature concentrated in one investigator's work — are visible directly in the spread of these citations.