Retroviral coinfection (Jaagsiekte and Maedi-Visna viruses) in sheep with pulmonary tumors in Transylvania (Romania): retrospective study on 82 cases - Hodor, Dragoș; Toma, Corina; Negoescu, Andrada; Olech, Monika; Gordon, Dumitru; Cătoi, Cornel; Taulescu, Marian (Frontiers in Veterinary Science, 2024)