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Fibril morphology as a function of the net molecular charge. (A) Electron micrographs of negatively stained fibrils (c = 1 mM, t = 1 month) from samples where the net charge on the molecule is +1. (B) Electron micrographs of negatively stained fibrils (c = 1 mM, t = 1 month) from samples where the net charge on the molecule is −1.
