The E2 glycoprotein of classical swine fever virus (CSFV) plays multiple roles in the viral life cycle. The chimeric live attenuated C strain with the E2 substitution of bovine viral diarrhea virus (BVDV) is a promising marker vaccine candidate. In this study, the recombinant chimeric CSFV/bE2 cDNA clone harboring heterologous E2 (bE2) of BVDV was constructed by genetic approaches.
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