Figure 17.

Tyrosine hydroxylase interneurons. Low-power photomicrographs of tyrosine hydroxylase (TH) immunostaining in the temporal cortex of the human (anterolateral temporal lobe) (A), macaque (area TE) (B), somatosensory cortex of the gerbil (C), and somatosensory cortex of rat (D), extending from lower part of layer V to the white matter. Some TH neurons are indicated with arrows. TH neurons are relatively abundant in the deep layers of the human neocortex when compared to other species. However, they are occasionally found in the somatosensory cortex of the rat and gerbil whereas in the macaque monkey no TH neurons were observed in the in the lateral temporal cortex. Nevertheless, in other cortical areas of the monkey these cells are also present in deep layers. Scale bar = 160 μm.