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. 2008 Oct 27;205(11):2465–2472. doi: 10.1084/jem.20080789

Figure 1.

Figure 1.

Induction of RNA transcripts in control, P1, and P2 lymphocytes undergoing in vitro CSR. RNA transcripts of the genes encoding CD19, AID, UNG2, PMS2, MLH1, PMS1, MSH2, MSH6, and IgE (germline and functional) were analyzed using RT-PCR in PBLs from controls (n = 5), and P1 and P2 (n = 1) both before and after a 5-d activation with sCD40L plus IL-4. As is the case for AID and UNG2, MMR transcripts were induced during CSR activation. Germline IgE transcripts were normally expressed after activation, in contrast to the lack of functional transcripts in P1 and low level in P2. (D0, day 0; D5, day 5).