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Accuracy of the FN location and blockade. (a) Gross dissection, left lateral view showing the FN (black arrowhead) stained. (b) Transverse cryosection; notice the ink (*) at the iliopsoas muscle. Cr = cranial, Cd = caudal, L6 = sixth lumbar vertebrae, L7 = seventh lumbar vertebrae, IL = wing of ilium
