Gene responsible for deficient activity of the beta subunit of C8, the eighth component of complement, is located on mouse chromosome 4.
Tanaka S, Suzuki T, Sakaizumi M, Harada Y, Matsushima Y, Miyashita N, Fukumori Y, Inai S, Moriwaki K, Yonekawa H. Immunogenetics. 1991; 33(1):18-23.