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While this question mentions a different peptide (PT141), the underlying principle is similar: nasal spray offers convenience
Luke, J
It serves critical roles in cellular redox reactions for energy metabolism and acts as an essential substrate for key signaling enzymes regulating DNA repair, gene expression, and cell signaling
If you've given up all animal products, you should consider using fortified cereals or nutritional yeasts or taking a vitamin B12 supplement
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PMID 808970
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