Figure 5. Effects of GTE- and cocoa-supplemented diets on excitatory cholinergic (VAChT-positive) and glutamatergic (VGluT1 and VGluT2) synaptic inputs to aged spinal MNs. (A–F) Graphs show the average density (number of puncta per 100 μm of MN soma perimeter, A, C, E) and size (in μm2, B, D, F) of the different types of afferent synapses examined; the red dashed line in each graph indicates the mean value of the corresponding afferent synapse density or size found in adult mice [