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Ethics declarations Ethics approval and consent to participate The animal study was performed according to the institutional animal care and use committee of the First Affiliated Hospital, Zhejiang University School of Medicine and approved (2023 702) by the Tab of Animal Experimental Ethical Inspection of the First Affiliated Hospital, Zhejiang University School of Medicine (date of approval: February 22, 2023)
Histamine intolerance can be linked to MTHFR gene mutations and methylation issues
For a full breakdown of the regulatory landscape, see BPC-157 and the FDA's Category 2 classification
GHK exists naturally in saliva and urine as well, released from extracellular matrix proteins including SPARC and the collagen 2(I) chain during tissue injury, functioning as a matrikine damage signal that activates repair mechanisms
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