To further define TCRs, BW58 mouse thymoma cells were transfected with type I NKT TCRs (2C12, VB8-STD), an atypical Vα10Jα50-encoded but αGalCer-reactive TCR (A10B8.1) (33) or a type II NKT TCR that recognizes sulfatide (XV19) (29). This evidence concerns the gene SGCG and thymoma.