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Arch Biochem Biophys 527(2):113118
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"Growth hormone (GH)-releasing peptide stimulates GH release in normal men and acts synergistically with GH-releasing hormone." Journal of Clinical Endocrinology & Metabolism
Naturally occurring plasma levels of GHK were confirmed to decline from approximately 200 g/L at age 2025 to 80 g/L by age 6080, coinciding with reduced regenerative capacity
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