Figure 2B. [doi:10.1002/gene.20190] Copyright: This image is from Samokhvalov IM; Thomson AM; Lalancette C; Liakhovitskaia A; Ure J; Medvinsky A, "Multifunctional reversible knockout/reporter system enabling fully functional reconstitution of the AML1/Runx1 locus and rescue of hematopoiesis." Genesis 2006 44: 115-21. Reprinted with permission of Wiley-Liss Inc. [PMID:16496309]