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Materials and Methods ARA 290 is a linear 11-amino acid peptide of molecular weight 1257 daltons (21)

Conceptualization: AD, EG Methodology: AD, EG, AG, HS, JC, MLV, PLC, CC, TG, OF, AMK, CL, BJ Investigation: AD, EG, AG, MLV, HS, TG, OF, DK Visualization: AD, EG, AG, HS Funding acquisition: AD, RB, GWM Project administration: AD, RB, GWM Supervision: AD Writing original draft: AD, EG Writing review & editing: AD, EG, AG, HS, JC, MLV, PLC, CC, TG, OF, AMK, CL, DK, RB, GWM Competing interests Authors declare that they have no competing interests

It was originally derived from a naturally occurring protein fragment identified in gastric tissue

gentle inversion is sufficient Use Glass or Low-Bind Plastics: Peptides can adsorb to container surfaces Quality Control Visual inspection before each use (clarity, color, particulates) Document any observed changes Consider HPLC purity testing for long-term studies Maintain chain of custody and temperature logs Frequently Asked Questions How long does reconstituted BPC-157 last in the refrigerator