There are four layers of vascular network within the striate cortex. The 3rd layer was clearly divided into sublayer 3a, 3b, 3c. The capillary density of the sublayer 3b is with lower density, which is just situated in Gennari's band. 有纹区皮质可见4层血管网,第3层血管网又明显地分为3a、3b、3c三个亚层,3b亚层毛细血管密度稀疏,相当Gennari带。