PCR for IG and TRG@ gene rearrangements. (A) The majority of the cases of RH were polyclonal for IG gene rearrangements (84%); Poly-E, Poly-N, and DLBCL showed clonal IG gene rearrangements in 33%, 63%, and 56% of cases, respectively. (B) 27% of cases with RH had monoclonal TRG@ gene rearrangements and no restricted T-cell responses; Poly-E, Poly-N, and DLBCL showed clonal TRG@ gene rearrangements in 50%, 24%, and 15% of cases, respectively; Poly-E, Poly-N, and DLBCL showed restricted T-cell responses in 20%, 9%, and 15% of cases, respectively.