Fig. 5.
Analysis of VH constant region transcripts from case 5184.
LHJH sequences are shown from FWR3 for reference. Transcripts for IgM, IgD, IgG1, and IgA were detected using a CDR3-specific primer together with constant region primers. As for case 5049, IgG1 sequences diverged from the IgM/D population. Mutations in codons 105 and 106 were shared with the α-transcripts, perhaps indicating a second switch event in a cell population that had switched from IgM/D to IgG1. The figure presents the 33 sequences that were analyzed. Constant region sequences are not shown.