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318 (6), G1042G1053
This protein is needed for B12 to be absorbed in the stomach
This rigorous analytical validation verifies the exact tripeptide sequence composition (Ala-His-Lys), precise molecular weight, and correct spatial conformation while ensuring the total absence of residual synthesis reagents, truncated fragments, heavy metals, or raw contaminants
Changes to the microbial phyla and genera observed in the 5A-1MQ-treated group switched from WD to LD could have been driven by additive, synergistic, or independent mechanisms relative to those induced by diet switch alone, which could not be determined with the current study design that lacked a group treated with 5A-1MQ and maintained on WD
