[[Category:Mammalian_Type_D_retrovirus]] [[Category:Sheep_Viruses]] [[Category:Expert_Review - Farm Animal]] [[Category:Respiratory_Viral_Infections]] [[Category:Respiratory_Diseases_-_Sheep]] [[Category:Lungs_-_Pathology]] [[Category:Respiratory_System_-_Hyperplastic/Neoplastic_Pathology]] | [[Category:Mammalian_Type_D_retrovirus]] [[Category:Sheep_Viruses]] [[Category:Expert_Review - Farm Animal]] [[Category:Respiratory_Viral_Infections]] [[Category:Respiratory_Diseases_-_Sheep]] [[Category:Lungs_-_Pathology]] [[Category:Respiratory_System_-_Hyperplastic/Neoplastic_Pathology]] |