Physiology. A substance believed to constitute nerves and nerve tissue. Obsolete.
Subcategories:
— development of (1)
— types of (4)
— of tooth (1)
— nerve fibre (27)
— neurokeratin (1)
— nucleus (1)
— nerve cell (59)
— neurotransmitter (6)
— sensory corpuscles, etc. (3)
— sensory structure (4)
— adrenergic receptor (3)