The Stable Gastric Pentadecapeptide BPC 157 Pleiotropic Beneficial Activity and Its Possible Relations with Neurotransmitter Activity Are peptides just a health trend? , Jay Campbell, bestselling author and founder of BioLongevity Labs, explains how these peptides act as natural signaling molecules that help the body repair, BPC 157 has already hit the mainstream, but should it hit your bloodstream? Modulation of the dynamic instability of tubulin assembly by the microtubule associated protein tau. Molecular Biology of the Cell