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We have investigated the requirements necessary for high-level production of the hepatitis B virus (HBV strain ayw) large surface glycoprotein preS1 with vaccinia virus (VV) recombinants. In earlier studies, only nanogram amounts of preS1 could be obtained from cells infected with an appropriate recombinant VV carrying the preS1 gene under the transcriptional control of a conventional VV promoter...
Selection of an optimal promoter is necessary for efficient expression of foreign genes with vaccinia virus. Since a variety of powerful (homologous) vaccinia virus promoters and foreign (heterologous) promoter systems have been described for use in vaccinia, we have addressed the question of whether a general rule exists that allows the prediction of the optimal promoter/gene combination. We have...
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