The peptide's intrinsic gastric stability and proline-rich sequence make it more resistant to enzymatic degradation than most peptides, but standard refrigerated storage is still required
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In particular, the individual microbial pattern can vary greatly between individuals, as can the level/composition of microbiota-produced GRP metabolites
For researchers building published datasets, reproducibility between labs which depends critically on consistent peptide identity and quality begins with the CoA
El Sayed SM, Al-quliti A-S, Mahmoud HS, et al