Amyloid-β (1-28) (Aβ28) is a synthetic peptide that lacks 14 C-terminal amino acids and is more soluble than Aβ42 (Item No. 20574).1 Aβ28 forms fibrils and plaques in vitro that are similar to those formed by Aβ42 and induces learning deficits in a passive avoidance task in rats.2,3,4WARNING This product is not for human or veterinary use.