part of part of composed primarily of immediate transformation of ganglion A biological tissue mass, most commonly a mass of nerve cell bodies. A ganglion is a cluster of neurons. It is part of a nervous system. It may include glial cells. The neurons are arranged in a specific constellation: neuronal somata are concentrated at the surface, thus forming a cell cortex, and neurites are concentrated in the centre of the ganglion to form the neuropil. A ganglion is a distinct unit but several ganglia may be anterio-posteriorly joined by connectives or transversally by commissures AAO:0010426 AEO:0000135 BAMS:G BTO:0000497 CALOHA:TS-0397 Cranial sensory placodes are focused areas of the head ectoderm of vertebrates that contribute to the development of the cranial sense organs and their associated ganglia. Placodes have long been considered a key character of vertebrates, and their evolution is proposed to have been essential for the evolution of an active predatory lifestyle by early vertebrates.[well established][VHOG] EFO:0000899 EHDAA2:0003135 EHDAA:2897 EHDAA:4662 EHDAA:5621 EHDAA:918 EMAPA:32846 EV:0100372 FBbt:00005137 FMA:5884 MA:0002406 MAT:0000207 MAT:0000343 MESH:D005724 MIAA:0000207 MIAA:0000343 Portion of tissue that contains cell bodies of neurons and is located outside the central nervous system.[AAO] Structures containing a collection of nerve cell bodies. (Source: BioGlossary, www.Biology-Text.com)[TAO] Subdivision of nervous system which primarily consists of cell bodies of neurons located outside the neuraxis (brain and spinal cord. Examples: spinal ganglion, trigeminal ganglion, superior cervical ganglion, celiac ganglion, inferior hypogastric (pelvic) ganglion (adapted from Foundational Model of Anatomy)[NIFSTD:nlx_anat_100302]. TAO:0000190 TGMA:0001016 TODO - check vert vs invert. Other species: Any of a number of aggregations of neurons, glial cells and their processes, surrounded by a glial cell and connective tissue sheath (plural: ganglia). // Subdivision of neural tree (organ) which primarily consists of cell bodies of neurons located outside the neuraxis (brain and spinal cord); together with a nucleus and its associated nerve, it constitutes a neural tree (organ). Examples: spinal ganglion, trigeminal ganglion, superior cervical ganglion, celiac ganglion, inferior hypogastric (pelvic) ganglion. // a cluster of nerve cells and associated glial cells (nuclear location) // Portion of tissue that contains cell bodies of neurons and is located outside the central nervous system. UBERON:0000045 UMLS:C0017067 VHOG:0000156 WBbt:0005189 XAO:0000209 ZFA:0000190 ganglia ganglionic neural ganglion uberon nervous system neural tissue presumptive ganglion cell cluster organ