Figure 6From: Intramuscular electroporation with the pro-opiomelanocortin gene in rat adjuvant arthritisRNA levels of β-endorphin were measured at weeks 1, 2 and 3 after injection with PBS (SG III) or 200 μg of POMC cDNA (SG I) and electroporation. Results are means ± SEM. Statistical comparisons between groups were made by two-tailed unpaired t-test. *P < 0.05, showing a significant difference between the control groups and the POMC gene and electroporation group.Back to article page