[Natural transmission ab ovo of the virus of infectious hepatitis in ducks].
D000818:Animals; D004372:Ducks; D004531:Eggs / Q000821:virology*; D006505:Hepatitis; D006506:Hepatitis A / Q000821:virology*; D006801:Humans; D008460:Meat; D011200:Poultry / Q000821:virology*; D014765:Viral Vaccines; D014777:Virus Diseases / Q000662:veterinary*
D014765:Viral Vaccines
EGGS/virology; HEPATITIS, INFECTIONS/virology; POULTRY/virology; VIRUS DISEASES/veterinary