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The positional relationship of the thoracodorsal artery and vein on the vertical section. The thoracodorsal artery runs in the same layer or a slightly shallower layer compared to the thoracodorsal vein in the muscle. A, The entire view of the vertical section of lattisimus dorsi muscle. B, The enlarged view of the vertical section. (The red arrow indicates the thoracodorsal artery, and the blue arrow indicates the thoracodorsal vein.)
