Figure 2From: Intramuscular electroporation with the pro-opiomelanocortin gene in rat adjuvant arthritisTime course of POMC gene injection and electroporation on the blood levels of beta-endorphin. Results are means ± SEM. Statistical comparisons between groups were made by analysis of variance; individual comparisons were made with the post-hoc test. *P < 0.05.Back to article page