Distribution of N-Acetylgalactosamine-Positive Perineuronal Nets in the Macaque Brain: Anatomy and Implications

Figure 4

Perineuronal nets in primary sensory and motor cortex. (a) shows perineuronal nets stained with WFA. (b) shows NeuN-labeled neurons. (c) shows merged images of the two. Neurons are predominantly absent from layer I, which is primarily composed of fibers running parallel to the cortical surface. We identify layer I or layer IV, where appropriate, in the rightmost panels. A1: primary auditory cortex, S1: primary somatosensory cortex, V1: primary visual cortex, and M1: primary motor cortex. Scale bar = 200 μm.