Fig. 1.

Semi-quantitative analysis of interleukin (IL)-23 p19 mRNA expression in rheumatoid arthritis (RA) synoviocytes. RA synoviocytes were stimulated by serum amyloid A (SAA) (5 µg/ml) for 6 h and total RNA was analysed by reverse transcription–polymerase chain reaction (RT–PCR) using primers specific for IL-23 p19 and β-actin, which was used as an internal control. Three experiments were performed using different RA synoviocytes and a representative finding is shown.