title: An assay for duck hepatitis virus type I in duck embryo liver cells and a comparison with other assays.
abstract: Plaque assays for virulent and attenuated duck hepatitis virus (DHV) type I in duck embryo liver (DEL) and duck embryo kidney (DEK) cells are described. The results of assays for DHV type I strains by in vitro, in ovo and in vivo methods are compared. DHV type II and III did not produce plaques in DEL or DEK cells. A serological relationship between DHV type I and DHV type II and III could not be demonstrated by the plaque reduction neutralisation assay.
authors.affiliation: Duck Unit, Animal Health Trust, Kennett, Newmarket, Suffolk, England.
authors.forename: P R
authors.initials: PR
authors.lastname: Woolcock