Coexpression of the Iμ-BCL6E2 with BCL6E1-Cμ1 transcripts. (A) The magnetic bead–purified B-cell subpopulations as indicated were simultaneously subjected to detection for the expression of both types of chimeric transcripts. Equal amounts of cDNA (3 μL) from each sample were input. (B) Sensitivity comparison of the assays for both types of chimeric transcripts. Serially diluted cDNA from the same sample as indicated was compared for sensitivity, where sensitivity for the Iμ-BCL6E2 was about 9-fold higher than that of the BCL6E1-Cμ1 transcripts.