neuron projection bundle axon tract NLX:147822 EV:0100304 FMA:83847 axonal tract BIRNLEX:1649 neuraxis tract tract nerve tract nerve tract A group of axons linking two or more neuropils and having a common origin, termination[FBbt]. WP says this is the analog of peripheral nerves in CNS. tract of neuraxis UBERON:0001018 central nervous system cell part cluster