Summary: Gross necropsy with documentation of changes present. Collection and histologic processing (paraffin blocks/H&E slides) and interpretation of kidneys, liver, spleen, pancreas, heart, lungs, esophagus, trachea, thymus, mesenteric lymph nodes, GI Tract, cerebrum, cerebellum, urinary bladder, and reproductive tract and additional tissues with gross changes. This includes photodocumentation of significant findings. This assay can be customized to include other target organs based on findings from other MMPC assays. This procedure is to be followed by trained Comparative Pathology Laboratory (CPL) staff responsible for performing necrospy diagnostics procedures at CPL.