Fig. 6From: Effects and molecular mechanism of chitosan-coated levodopa nanoliposomes on behavior of dyskinesia ratsThe immunohistochemistry results of p-ERK1/2 expression in the four groups (a = sham-operated, b = saline control, c = levodopa, d = levodopa liposomes). Magnification: ×200 *P < 0.05Back to article page