Figure 6.
Distribution and morphological analysis of CCK- and CB1 receptor-positive somata. Based on their size, two CCK-positive cell populations can be separated. In the somatosensory cortex, only the large cells contain CB1 receptors. The estimated size of the two populations of CCK-positive cells according to their cross-sectional area is 77 ± 17 μm2 (mean ± SD) for the small group and 155 ± 47 μm2 for the large CCK-positive subpopulation. Remarkably, the calculated size of the CB1 receptor-containing cell bodies (181 ± 36 μm2) overlapped with the large but not with the small CCK-positive cell population.