AUTHOR=Hodor Dragoș , Toma Corina , Negoescu Andrada , Olech Monika , Gordon Dumitru , Cătoi Cornel , Taulescu Marian TITLE=Retroviral coinfection (Jaagsiekte and Maedi-Visna viruses) in sheep with pulmonary tumors in Transylvania (Romania): retrospective study on 82 cases JOURNAL=Frontiers in Veterinary Science VOLUME=11 YEAR=2024 URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2024.1457971 DOI=10.3389/fvets.2024.1457971 ISSN=2297-1769