Ascending and descending axon collaterals efferent from the brainstem reticular formation. A retrograde fluorescent tracer study in the lizard, Varanus exanthematicus.
The existence of divergent axon collaterals of neurons in the reticular formation has been studied with fluorescent tracers in a lizard. It appeared that ascending and descending projections arise in at least partially overlapping fields. However, only few reticular or raphe neurons were found with both ascending and descending projections.
D000818:Animals; D004525:Efferent Pathways / Q000033:anatomy & histology; D008116:Lizards / Q000033:anatomy & histology*; D011903:Raphe Nuclei / Q000033:anatomy & histology; D012154:Reticular Formation / Q000033:anatomy & histology*