title: Challenge experiments with the virus of Aujeszky's disease in non-vaccinated and vaccinated sheep.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D006564:Herpesviridae / Q000276:immunology*; D011558:Herpesvirus 1, Suid / Q000276:immunology*; D011557:Pseudorabies / Q000517:prevention & control*; D012756:Sheep; D012757:Sheep Diseases / Q000517:prevention & control*; D014611:Vaccination; D014765:Viral Vaccines / Q000008:administration & dosage / Q000592:standards*
chemical_list: D014765:Viral Vaccines