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Proline introduces rigid kinks into peptide backbones, and proline-rich peptides typically show greater resistance to enzymatic degradation than linear peptides of comparable length
Summary : Vitamin B12 is naturally occurring in a variety of animal-based foods
Secondary route: FAK/paxillin and fibroblast adhesion BPC-157 also activates focal adhesion kinase (FAK) and paxillin, two key proteins in cell adhesion
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