Theodosia A. Kalfa, Suvarnamala Pushkaran, Xiaoling Zhang, James F. Johnson, Dao Pan, Deidre Daria, Hartmut Geiger, Jose A. Cancelas, David A. Williams, and Yi Zheng. 2010. “Rac1 and Rac2 GTPases Are Necessary for Early Erythropoietic Expansion in the Bone Marrow But Not in the Spleen”. Haematologica 95 (1). Pavia, Italy, 27-35. https://doi.org/10.3324/haematol.2009.006239.