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Plaque morphology of recombinant viruses in MDBK cell monolayer. BHV-1 (A), BHV-5 (B), BHV-1gE5 (C), BHV-5gEΔ (D), BHV-5gE1 (E), and BHV-5gE revertant (F) were inoculated onto MDBK cell monolayers, fixed after 30 h postinfection, and immunostained with bovine anti-BHV-5 serum (12).
