Peptides are small proteins that act like messengers, helping cells communicate...

https://ace-wiki.win/index.php/Why_Do_People_Confuse_Peptide_Research_with_Wellness_Claims%3F

Peptides are small proteins that act like messengers, helping cells communicate by binding to receptors. Researchers use peptides to study how receptors respond and select specific signals inside cells, often measuring changes like cyclic AMP levels