Region of CENTRAL NERVOUS SYSTEM that appears darker in color than the other type, WHITE MATTER. It is composed of neuronal CELL BODIES; NEUROPIL; GLIAL CELLS and CAPILLARIES but few MYELINATED NERVE FIBERS.
    

concept

Healthy adult human head and brain viewed from behind, MRI

Nervous system in a fruit fly larva, serial section TEM

3D-printed reconstruction of a healthy adult human brain

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Nervous system in a fruit fly larva, serial section TEM

Healthy adult human head and brain viewed from behind, MRI

3D-printed reconstruction of a healthy adult human brain