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Electron micrographs of virions observed in the enrichment cultures J14 and J15.
A, B, C. Virion types observed in both cultures, shown on the example of virions from the J15 culture.
D, E, F. Virion types observed only in the J14 culture. Samples were negatively stained with 2% (wt/vol) uranyl acetate. The black arrows point to the pleomorphic, spherical particles and the white arrow points to the polyhedral particle. Bars, 200 nm in (A), and 100 nm in (B–F).
