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Ultrastructural visualization of the ileum from 5-d-old mini-pigs by electron micrography. PBS-inoculated (A) and HRV-inoculated (B and C) at 48 hpi. Vacuoles devoid of virus particles (B) and virus particles encapsulated in Golgi-like follicle (white arrow) were observed in HRV-infected neonatal mini-pigs (C). Original magnification, × 40. HRV: Human rotavirus.
