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Anatomy of the regenerating spinal-projecting system in lamprey.
Individually identified reticulospinal (RS) neurons in the brain were labeled retrogradely with dextran tetramethylrhodamine (DTMR). These neurons are named according to the nomenclature of Rovainen (1967) as modified by Swain et al. (1993) and Jacobs et al. (1997). M: Mesencephalic; I: isthmic; B: bulbar; Mth: mauthner cell.
