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. Author manuscript; available in PMC: 2015 Aug 13.
Published in final edited form as: Neuron. 2013 Apr 10;78(1):191–204. doi: 10.1016/j.neuron.2013.02.007

Figure 3. Anatomical evidence that primary afferents project to dI3 INs.

Figure 3

(A) Left: YFP+ dI3 IN with vGluT1+ boutons apposed (labeled by arrows). Right: Orthogonal sections confirming apposition of boutons labeled 1-3.

(B) vGluT1+ boutons that are PV+ and PVnull on a YFP+ dI3 IN from a P7 spinal cord. Boutons in dashed boxes are magnified in Bii-Bvii. Inset in 3Bii depicts orthogonal sections of the PV+/YFP+ bouton in the Y-Z plane.

(C) vGluT1+ boutons (arrowheads) on YFP+ dI3 IN from chronically transected spinal cord confirm that they do not originate from supraspinal descending inputs.

All images from Isl1-YFP mice.