Figure 4From: On the possible role of ERK, p38 and CaMKII in the regulation of CGRP expression in morphine-tolerant rats Western blot analyses of the phosphorylation of ERK, p38 and CaMKII in the spinal cord dorsal horn following a chronic morphine treatment. A 7-day treatment with morphine (M, 15 μg) increased the phosphorylated levels of ERK, p38 and CaMKII on day 7. Data are expressed as mean ± SEM of 4 animals. *p < 0.01 vs saline (NS) group.Back to article page