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Comparisons of the β-annuli of CNV, CLSV, RCNMV, and CMV at the quasi-6-fold axis. In all panels, the different subunits at the 3-fold axis are given unique colors. Note that these colors do not correspond to subunits A, B, and C, since all three proteins are C subunits. CMV, a member of the Bromoviridae family that is transmitted by aphids, is shown for comparison.
