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doi: 10.1016/0304-4165(88)90038-4, PMID: [DOI] [PubMed] [Google Scholar] 22.Huang KP, Huang FL

Vitamin B12 is an essential nutrient vital for sustaining vitality and promoting health

Glutathione protects enzyme proteins that inhibit collagen-digesting enzymes that cause damage to the skin, leading to wrinkles, or in the area of acne lesions, leading to scars

Gastrointestinal cell-line studies involving peptide-mediated regulation

The study of pernicious anemia patients with relapse of anemia (Figure 10) (53) has shown that the depletion of serum vitamin B-12 after folic acid administration is accompanied by a proportional increase in reticulocyte counts, suggesting that serum vitamin B-12 is diverted into the hematopoietic system to provide the necessary vitamin B-12 coenzyme for methionine production

B12 has been measured in some plant-based foods