Apex2 is required for efficient somatic hypermutation but not for class switch recombination of immunoglobulin genes

Z Sabouri, I. m Okazaki, R Shinkura, N Begum, H Nagaoka, D Tsuchimoto, Y Nakabeppu and T. Honjo

International Immunology 21 ( 8 ): 947 - 955 , 2009