Figure 2. Comparison of developing neocortex and piriform cortex. A, Main migratory routes to the neocortex and to the piriform cortex. i, Lateral cortical stream and modes of migration to the piriform cortex. B, Prenatal development of layers in the neocortex and in the piriform cortex illustrated by cresyl violet stainings. Cx, neocortex; OCx, olfactory cortex; Hip, hippocampus; ECM, extracellular matrix; MZ, marginal zone; CP, cortical plate; SP, subplate; SVZ, subventricular zone; IZ, intermediate zone; WM, white matter; L, layer; str, striatum; *anterior commissure. Scale bars, 200 µm.