FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term climbing fiber ID (Ontology) GO:0044301 (Gene Ontology)
Definition The axon of inferior olive neuron that projects to the cerebellar cortex, largely via the inferior cerebellar peduncle. They range in diameter from 1-3 um and are myelinated until they enter the granule cell layer. They give off collaterals to the deep cerebellar nuclei. They synapse extensively with the dendrites of Purkinje cells in the molecular layer, where each fiber branches repeatedly to climb along the Purkinje cell dendritic tree. Each Purkinje cell is innervated by only a single climbing fiber.
Also Known As "climbing fibre"
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Spanning Tree (Parents/Children)
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  neuron projection
   |__axon
       |__climbing fiber
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Synonyms
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Secondary IDs
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NIF_Subcellular:nlx_subcell_20090203