Annals of Neurology: Volume 82, Number 3, September 2017

ON THE COVER: A nerve fascicle of a human thoracodorsal nerve stained by using immunofluorescence against choline acetyltransferase (green) to visualize cholinergic (motor) axons and neurofilament (red), which stains all myelinated and unmyelinated axons irrespective of their axon quality (motor or sensory). Doubly labeled motor axons appear yellow due to the overlap of green and red. Note the uneven distribution of motor axons, which constitute only about 10% of axons in spinal nerves that innervate the human upper limbs. See Gesslbauer et al, pp. 396–408 in this issue for further details. Ann Neurol 2017;82:1–1

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