This image is a sample of hemocyanin (5mg/ml) taken on the FEI Tecnai G2 F20 Cryo FE-TEM at an accelerating voltage of 200kV with a defocus of 2 μm and a spot size of 7. The K2 camera with dose fractioned in counted mode on a holey carbon grid. The sample and image were courtesy of Omkar Shinde (Dr. Pingwei Li, Biochemistry and Biophysics).