1. Kerbel RS (2003) Human tumor xenografts as predictive preclinical models for anticancer drug activity in humans: better than commonly perceived-but they can be improved. Cancer Biol Ther 2:S134–S139
2. Kelland LR (2004) Of mice and men: values and liabilities of the athymic nude mouse model in anticancer drug development. Eur J Cancer 40:827–836
3. Ding Y, Cravero JD, Adrian K et al (2010) Modeling pancreatic cancer in vivo: from xenograft and carcinogen-induced systems to genetically engineered mice. Pancreas 39:283–292
4. Nielsen SW (1976) Comparative pathology of bone tumors in animals, with particular emphasis on the dog. In: Grundmann E (ed) Malignant bone tumors. Recent results in cancer research/Fortschritte der Krebsforschung/Progrès dans les recherches Sur le cancer, vol 54. Springer, Berlin, Heidelberg, pp 3–16
5. Sharkey FE, Fogh J (1979) Incidence and pathological features of spontaneous tumors in athymic nude mice. Cancer Res 39:833–839