P21 (P021) — Research Peptide Overview, Specifications, and Sourcing

P21 is a synthetic tetrapeptide derivative of CNTF designed to cross the blood-brain barrier. It enhances BDNF signaling and promotes neurogenesis and dendritic plasticity in the hippocampus. Research focuses on cognitive decline and Alzheimer's disease.

P21 is a synthetic tetrapeptide derivative of CNTF (Ciliary Neurotrophic Factor) designed to cross the blood-brain barrier. It enhances BDNF signaling and inhibits leukemia inhibitory factor (LIF) receptor activity, promoting neurogenesis and dendritic plasticity in the hippocampus. Research focuses on cognitive decline, Alzheimer’s disease, and neurodegeneration.

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