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. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: J Comp Neurol. 2017 Sep 20;526(1):96–108. doi: 10.1002/cne.24321

TABLE 4.

Predominant FXG type in individual circuits

FXG Type Circuits FXG-associated transcripts
Type I (FXR2P, FMRP, FXR1P) Hippocampal associational fibers APC, β-catenin
Thalamocortical axons APC
Corticocortical axons APC, β-catenin
Cerebellar parallel fibers
Olfactory limb of the anterior commissure (non-crossing fibers)
Type II (FXR2P, FMRP) Hippocampal mossy fibers APC, MAP1B
Olfactory nerve OMP, NCAM
Type III (FXR2P, FXR1P) Reticular formation
Type IV (FXR2P) Deep cerebellar molecular layer

Indicated are circuits in which each FXG type predominates. Specific transcripts associated with FXGs in each circuit are indicated (see also Akins et al., 2017).