Non-germ-line elements (NGE) are present in the T cell receptor beta-chain genes isolated from the mutant mouse, motheaten (me/me).
Hagiya M, Davis DD, Shultz LD, Sakano H. Non-germ-line elements (NGE) are present in the T cell receptor beta-chain genes isolated from the mutant mouse, motheaten (me/me). J Immunol. 1986 Apr 01; 136(7):2697-700.