title: Early induction of resistance in ducklings against virus hepatitis.
mesh_terms: D000284:Administration, Oral; D000818:Animals; D002460:Cell Line; D004372:Ducks; D005347:Fibroblasts; D005528:Foot; D006520:Hepatitis, Animal / Q000276:immunology* / Q000517:prevention & control; D006507:Hepatovirus / Q000276:immunology; D007110:Immunity, Active; D007267:Injections; D007273:Injections, Intramuscular; D011201:Poultry Diseases / Q000276:immunology* / Q000517:prevention & control; D013997:Time Factors; D014765:Viral Vaccines / Q000008:administration & dosage; D014776:Virus Cultivation
chemical_list: D014765:Viral Vaccines