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- 1. The concentration of infectious virus particles present in a suspension. 2. A measure of antibody concentration, given by the highest dilution of the sample that results either in a useable immunoassay, or in the formation of visible precipitate when challenged by the appropriate antigen.
UN Food and Agriculture Organization - Cite This Source - This Definition
- attenuated vaccine, Biologics, edible vaccine, live recombinant vaccine, live vaccine, multivalent vaccine, non-virulent agent, Polyvalent vaccine, preventive immunization, Subunit vaccine, vaccination, Vaccine, Vaccinia, viral vaccine