�A�'!artery, tumor, nerve fiber, cerebral cortex, white matter, ventricle, choroid plexus, blood clot, microvessel, glioma, astrocyte, oligodendrocyte, neuron, synapse, myelin sheath, dura mater, meninges, ependymal cell, choroid fissure, optic nerve, retinal pigment epithelium, macula lutea, vitreous body, sclera�