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Visualization of additional densities attached to the floor of protease-minus capsids. The region corresponding to the colored portion in Fig. 1D was extracted from the wild-type (A) and the protease-minus (B) capsid reconstructions and viewed from one side. The additional masses that are only present in protease-minus capsids are shown in white. For clarity, floating densities that do not make contacts with the capsid floor have been removed.
