Examlex
What observational evidence do we have that quasars are the centers of very distant galaxies
Neuron
A specialized cell transmitting nerve impulses; a nerve cell, which is the fundamental unit of the nervous system enabling communication throughout the body.
Nervous System
A complex network of nerves and cells that transmit signals between different parts of the body.
Carcinoma
Carcinoma is a type of cancer that begins in the skin or in tissues that line or cover internal organs.
Myelin Sheath
A fatty layer that surrounds the axon of some neurons, increasing the speed at which electrical impulses propagate along the nerve cell.
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