This collection is of digitised whole slide images of normal and pathological mouse organs and tissues for mouse models of disease. These images and reports have been generated for mice that were produced as part of the service provided to Australian researchers by the Australian Phenomics Network, and of mice whose analysis was specifically requested by individual researchers. While part of the data set is openly available to all Australian researchers, the Histopathology and Organ Pathology Service also facilitates access requests to data sets with restricted access. The data set provides a permanent archive for researchers. It continues to be added to. The images and data are being produced by the Histopathology and Organ Pathology Service (HOPS) at the University of Melbourne. The service also deals with a small number of other laboratory species.