Figure 1.

Reverse transcription-polymerase chain reaction (RT-PCR) analysis of gene expression of Ids in intestinal intraepithelial lymphocytes (IELs). (A) Id gene expression in IELs and (B) lamina propria lymphocytes (LPLs) and in their subsets. RNA was prepared from the respective cells as indicated on the left and subjected to RT followed by PCR. Genes analysed are indicated on the top. β-actin served as an internal loading control. Representative data of three independent experiments are shown.