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A Peptide Debate is Rocking Ultra-Running. Is Triathlon Next? - Slowtwitch News Available Options:50mg X 10pk DISCUSSION Copper peptides are naturally occurring small protein fragments that possess high affinity to copper ions in human serum and cerebrospinal fluid (PMID21898044) https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3385/11721469/a1044a6ccbcb/molecules-30-00136-g007.jpg Vitamin B12 (Cobalamin)
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