Fig. 4From: Oligomers of hepatitis A virus (HAV) capsid protein VP1 generated in a heterologous expression systemMorphological analysis of refolded VP1 using electron microscopy. A A micrograph of negatively stained refolded VP1, showing the top and side orientations highlighted in yellow and red circles respectively. (Scale bar 100 nm, Magnification 50k×). B 2D classification of refolded VP1 showing 10 different classes with both top (yellow) and side (red) viewsBack to article page