LCL-specific CD4⁺ T-cell recognition of other B- and T-lymphoma cell lines. T cells (10⁴ cells/well) were cocultured overnight with standard numbers (5 × 10⁴ cells/well) of HLA-matched and -mismatched LCLs and (A) Hodgkin lymphoma (HL) lines, (B) follicular cell B lymphoma (FCBL) lines, (C) multiple myeloma (MM) lines, and (D) T-cell lymphoma (TL) lines. The experimental design and expression of results are the same as in Figure 4.