In veterinary field, vimentin, E-cadherin, pancytokeratin, Wilms tumor 1 (WT1), MUC-1, and calretinin were used to differentiate between reactive mesothelial cells, malignant mesotheliomas, and adenocarcinomas in large felids only through post-mortem [7]. This evidence concerns the gene CALB2 and malignant mesothelioma.