Amyloid fibril (bovine insulin) on mica imaged in water using BE-PFM technique, 250 nm x 250 nm. Imaged with the MFP-3D AFM.
Image courtesy of G. L. Thompson, V. V. Reukov, A. A. Vertegel, M. P. Nikiforov, Clemson University, Dept. Bioengineering, and S. Jesse, S. V. Kalinin, Oak Ridge National Lab.