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SSV1 virion electron micrographs. (A) Typical transmission electron micrographs of SSV1-Δvp3 (EAI420) virions. (B) Typical transmission electron micrographs of SSV1 wild-type virions. SSV1 wild-type particles are ∼76 by 40 nm. Samples were negatively stained with uranyl acetate and imaged on a Tecnai F-20 TEM (FEI Inc.) at a 200-keV accelerating voltage. Images were obtained with a Gatan Ultrascan camera.
