The Influence of Arginine on the Response of Enamel Matrix Derivative (EMD) Proteins to Thermal Stress: Towards Improving the Stability of EMD-Based Products - Fig 1

3D-DLS size distributions for EMD at pH 2 and 20°C, (a) without and (b) with arginine, before (solid curve) and after (hatched curve) heat treatment at 70°C. TEM micrographs of EMD at pH 2 and 20°C without arginine, (c) before and (d) after heat treatment. TEM micrographs of EMD at pH 2 and 20°C with arginine, (e) before and (f) after heat treatment. The scale bar corresponds to 50 nm in all the images and the insets in (e) and (f) show examples of relatively large agglomerates also present in these specimens.