IFN Regulatory Factor 5 Is Required for Disease Development in the Fc gamma RIIB(-/-)Yaa and Fc gamma RIIB-/- Mouse Models of Systemic Lupus Erythematosus JOURNAL OF IMMUNOLOGY Richez, C., Yasuda, K., Bonegio, R. G., Watkins, A. A., Aprahamian, T., Busto, P., Richards, R. J., Liu, C. L., Cheung, R., Utz, P. J., Marshak-Rothstein, A., Rifkin, I. R. 2010; 184 (2): 796-806