GHK-Cu and BPC-157 are two peptides frequently examined in regenerative and tissue-repair research for their potential roles in cellular migration, collagen synthesis, and inflammatory response modulation. GHK-Cu, a copper-binding tripeptide, is widely studied for its involvement in extracellular matrix remodeling and skin regeneration processes, while BPC-157, a synthetic peptide derived from a protective gastric protein sequence, is investigated for its influence on angiogenesis and tissue repair signaling pathways.