title: Gel diffusion method for determining the titer of duck hepatititis virus.
abstract: Apparatus necessary for a quantitative gel diffusion and precipitation assay of duck hepatitis virus was designed and constructed.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D004372:Ducks; D006518:Hepatitis Viruses / Q000302:isolation & purification*; D005779:Immunodiffusion; D008722:Methods