A rapid and small-scale method for screening vaccinia virus recombinants employing micrococcal nuclease is described. This protocol utilizes the differential sensitivity of cellular and viral DNA to the nuclease, which can be selectively activated by addition of Ca2+ and inactivated by elimination of Ca2+. Two to five micrograms of viral DNA can be obtained from one infected L cell plate (50 mm) after overnight incubation.
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Univ London Imperial Coll Sci Technol & Med, Div Infect Dis, Fac Med, Virol Sect, London W2 1PG, England
Agence Natl Securite Sanitaire Alimentat Environm, UMR 1161, F-94700 Maisons Alfort, FranceUniv London Imperial Coll Sci Technol & Med, Div Infect Dis, Fac Med, Virol Sect, London W2 1PG, England
Doceul, Virginie
Hollinshead, Michael
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Univ London Imperial Coll Sci Technol & Med, Div Infect Dis, Fac Med, Virol Sect, London W2 1PG, EnglandUniv London Imperial Coll Sci Technol & Med, Div Infect Dis, Fac Med, Virol Sect, London W2 1PG, England
Hollinshead, Michael
Smith, Geoffrey L.
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Univ London Imperial Coll Sci Technol & Med, Div Infect Dis, Fac Med, Virol Sect, London W2 1PG, England
Univ Cambridge, Dept Pathol, Cambridge CB2 1QP, EnglandUniv London Imperial Coll Sci Technol & Med, Div Infect Dis, Fac Med, Virol Sect, London W2 1PG, England