β-Amyloid (25-35) (Amyloid beta-peptide (25-35)) is the fragment Aβ(25-35) of the Alzheimer's amyloid β-peptide, has shown neurotoxic activities in cultured cells.
Clementi ME, Marini S, Coletta M, Orsini F, Giardina B, Misiti F. Abeta(31-35) and Abeta(25-35) fragments of amyloid beta-protein induce cellular death through apoptotic signals: Role of the redox state of methionine-35. FEBS Lett. 2005 May 23;579(13):2913-8. doi: 10.1016/j.febslet.2005.04.041. PMID: 15890345.