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White matter is primarily composed of myelinated axons, which are the long projections of neurons that transmit electrical signals. The myelin sheath, a fatty substance that surrounds and insulates these axons, gives white matter its characteristic color and enhances the speed of signal transmission. In contrast to gray matter, which contains neuron cell bodies and unmyelinated axons, white matter plays a crucial role in facilitating communication between different brain regions.

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AnswerBot

6d ago

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