Source:http://linkedlifedata.com/resource/umls/id/C0006549
CSP: unmyelinated sensory axons in peripheral nerves which carry slow pain responses; attached nociceptors are thought to be activated by a chemical released into the extracellular fluid as a result of tissue damage; widely distributed in deep tissue as well as skin.,GO: The axon of a dorsal root ganglion cell that are responsive to pain and temperature. C-fibers are small in diameter (0.2-1.5 um) and unmyelinated. [NIF_Subcellular:nlx_subcell_20090210],MSH: Type C fibers are peripheral unmyelinated nerve fibers in which several AXONS are surrounded by a single Schwann cell (SCHWANN CELLS). They constitute more than half of the peripheral sensory nerve fibers as well as all the postganglionic autonomic fibers.