TEM images of fibrils at the endpoint of the reaction. Comparison of the morphology of amyloid fibrils, at the end of the fibril reaction. κI FL in (A) Acetate/Borate/Citrate buffer pH 4.0, (B) ABC buffer pH 7.0, (C) PBS pH 7.4 and AL-09 FL in (D) ABC pH 4.0, (E) Acetate/Borate/Citrate buffer pH 7.0, and (F) PBS pH 7.4. Scale bar represent 200 nm.