FIGURE 1.

Laminar distributions of Nissl, neuronal nuclear antigen (NeuN), cytochrome oxidase (CO), and vesicular glutamate transporter 2 (VGLUT2) in primary visual cortex of chimpanzees (A), Old World macaque monkeys (B), owl monkeys (C), New World squirrel monkeys (D), and marmosets (E), prosimian galagos (F) and mouse lemurs (G), and tree shrews (H). Hässler’s (1967) laminar divisions listed to the left, Brodmann’s (1909) divisions are listed in parentheses. Individual panels are scaled relative to V1 of chimpanzees to visualize comparisons between laminar density and staining intensity across primate species. Absolute scale comparisons are shown in Figure 2.