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

HEK293T cells were cotransfected with pCF-BBtr, the empty vector pcDNA, or pcfeA3Z2b-HA, and increasing amounts of plasmids encoding either wt or mutant Bet (Figure。

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。

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