Term Name:	rod spherule
Synonyms:	rod cell spherule, rod photoreceptor spherule
Definition:	A specialized neuron projection which is the site of synaptic transmission produced by retinal rod cells. Rod spherules are small round enlargements of the axon (3-5 micrometers diameter) or even extensions of the cell body.
Ontology:	GO: Cellular Component [GO:0044317]    QuickGO    AmiGO