A peptide fragment of 14 amino acids. derived from the C-terminus of acetylcholinesterase (AChE). might underlie the now well-established noncholinergic effects of the enzyme. This peptide is bioactive in a variety of systems including acute (brain slices) and chronic (organotypic culture) preparations of hippocampus. https://www.inksstops.shop/product-category/fk-irons-spektra-xion/