Jögi , Annika, Marica Vaapil, Martin Johansson, and Sven Påhlman. “Cancer Cell Differentiation Heterogeneity and Aggressive Behavior in Solid Tumors”. Upsala Journal of Medical Sciences 117, no. 2 (February 29, 2012). Accessed April 8, 2026. https://ujms.net/index.php/ujms/article/view/6028.