Independently of the animal species, we realize a complete necropsy with description /valuation of all macroscopic findings with photographic registration. Subsequently, depending on the macroscopic findings and the requester's instructions, we take samples for their later processing. Beside mice, in the UPMiC we also carry out these studies in other laboratory animals (rabbit, rat, guinea pig, etc.) and other species such as domestic animals (dog, cat, horse, etc.), exotics (reptile, fish, amphibian, etc.) and farm animals (ruminant, suid, bird, etc.).