Summary
A titration method for hog cholera viruses (HCV) of low virulence (strain LOM) has been described. The method, designated the INC-method, is based upon interference between the preinoculated strain LOM and the postinoculated Newcastle disease virus in swine testicle cell cultures.
The INC-method has been shown to be an accurate method for the titration of HCV and neutralizing antibodies and proved to be as sensitive as the swine inoculation test.
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Sato, U., Hanaki, T. & Nobuto, K. Attenuation of the hog cholera virus by continuous cell-virus propagation. Archiv f Virusforschung 26, 1–10 (1969). https://doi.org/10.1007/BF01241171
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DOI: https://doi.org/10.1007/BF01241171