sentences:  Verfaillie moved to the Katholieke Universiteit Leuven at the height of the controversy in 2006 but retained her position at the University of Minnesota.She has continued to defend her work and gave a list of publications that have proven the utility of MAPCs, albeit without addressing the criticisms of how the key parts of her work could not be reproduced by other labs.In 2007, she collaborated with Irving Weissman at Stanford University to demonstrate that MAPCs could produce blood cells although she did not address the key claims of her original 2002 paper.