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Electron microscopy of virus particles on the surfaces of HaCaT cells infected with F-BAC gB−/gD−, F-BAC gD-kan, or F-BAC. HaCaT cells were infected with F-BAC gB−/gD−, F-BAC gD-kan (gD−), or F-BAC (w.t.) for 19 to 28 h and then fixed, stained, and sectioned for electron microscopic examination.
