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Briefly, FeFAB cells are the modified CRFK cells that express β-galactosidase under the control of the FFV LTR, which is trans-activated by the FFV Tas protein in relation to。

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

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

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