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  • Title: Reduction in in vivo testing at the National Veterinary Services Laboratories of the United States Department of Agriculture.
    Author: Hyde RL.
    Journal: Dev Biol Stand; 1986; 64():149-51. PubMed ID: 3025035.
    Abstract:
    Efforts are being made at the National Veterinary Services Laboratories to reduce in vivo testing of USDA licensed veterinary vaccines. A hemagglutination test for determining potency of killed parvovirus vaccine is currently being used for canine and swine adjuvanted and nonadjuvanted products; a serum neutralization inhibition test (SNIT) is being developed for potency testing of killed adjuvanted infectious bovine rhinotracheitis (IBR), bovine virus diarrhea (BVD) and parainfluenza (PI3) vaccines: and a tissue culture titration method for live avian encephalomyelitis virus vaccine is being pursued as a replacement for the old hatch-out chick embryo titration method. Difficulties in separating the antigen from oil emulsion products are preventing significant advances in developing in vitro testing procedures for poultry killed-virus vaccines.
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