Figure 2.
Kappa, sigma, sigma-2 sterile transcripts. RNA transcripts from the four L chain isotypes, as labeled. Kappa: mature mRNA, sterile VL transcript, sterile transcript with VL and JC. Sigma-2: mature mRNA, sterile transcript with splicing within VL-JL region, sterile transcript without splicing. Sigma: mature mRNA, sterile transcript with splicing within VL-JL region, sterile transcript with 3’ splice site at the C exon. Lambda: mature mRNA. The figures drawn with polyA tails have been isolated from cDNA libraries, the others were cloned by RT-PCR. Arrows indicate location of qPCR primers. RSS are shown as filled (12 bp spacer) and open (23 bp spacer) triangles.
