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FeFAB cells (a kind gift from Dr Martin Löchelt, Germany) arefefab modified CRFK cells that are used for FFV infection experiments. FeFAB cells express β-galactosidase under the control of the FFV LTR, which is trans。

The flanking sequences of the 3′ LTfefabR were left unaltered by this strategy. Transfection of these chimeric vectors into 293T cells and harvest of supernatants 48 h later。

FeFAB assay indicated that the culture supernatants collected from the infected and drug-pretreated cells contained infectious FFV virions, which induce expression of the β-galactosidase in the ...

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