Cover: NEB in a respiratory area of the lungs of a 10-d-old rat. (a) Maximum intensity projection of 25 confocal optical sections (1-{mu}m interval) of an overview of the innervation pattern of a CB-IR NEB, showing that VR1-IR nerve fibers (arrows) do not contain CB, although the thin CB-IR branches (open arrows) are seen in very close proximity. Thick CB-IR nerve fibers (open arrowheads) can be differentiated more easily. (b) High-magnification detail of the basal part of the NEB shown in a, revealing in more detail that VR1 IR (arrows) and CB IR (open arrows) are expressed by different nerve terminals. Maximum intensity projection of five confocal optical sections (1-{mu}m interval). For more information see article by Brouns and colleagues on page 275.