Human hybrid (T and B lymphoblast) cell line. Fusion cll line between 174 and CEM.T2. This hybrid cells do not express MHC class II. HLA-A2 positive. Lifespan: infinite; Fusion_cell_1 name: LCL721 B cell; Fusion_cell_1 strain: human; Fusion_cell_2 name: CEM.T cell; Fusion_cell_2 strain: human.