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Vitamin B2 (VitB2), vitamin B6 (VitB6), vitamin B9 (VitB9) and vitamin B12 (VitB12) are coenzymes of one carbon unit and participate in purine and thymus

"Biologically active peptides: from a laboratory curiosity to a functional skin care ingredient." International Journal of Cosmetic Science , 22(3), 207-218

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[DOI] [PubMed] [Google Scholar] 3.Arnold L.M., Bennett R.M., Crofford L.J., et al