Figure 2. IL-20 receptor family member expression. A: PCR shows the mRNA expression of interleukin-20RA (IL-20RA), IL-20RB, IL-22RA1, and IL-10RB in human dermal fibroblasts and human trabecular meshwork (HTM) cells. B: Analysis of IL-20RA alternative splicing in dermal fibroblasts and HTM cells. Full-length variant 1 (V1) and variant 3 (V3), which lacks exon 3, were detected in both cell types.