The two regulatory heptapeptides with a Pro-Gly-Pro extension: Selank, a tuftsin analogue studied on the GABAergic system and the neuro-immune interface, and Semax, an ACTH 4–7 fragment analogue studied on neurotrophins (BDNF/TrkB). 10 mg in a 3 ml vial, purity ≥99%.
