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References PubChem search: AHK copper peptide PubMed: Ala-His-Lys copper peptide PubMed: copper peptides and extracellular matrix Research-use notice: Supplied strictly for lawful research, laboratory, analytical, educational, or R&D purposes where permitted by applicable law

Vitamin B12, a unique member of the Vitamin B complex, stands out due to its complex structure and the necessity of intrinsic factor for its absorption

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If the intestines find it difficult to absorb and break down vitamin B12 from food sources, it can cause a deficiency