Segmental homologies among reticulospinal neurons in the hindbrain of the zebrafish larva

We have examined the morphology of identified reticulospinal neurons in larval zebrafish by retrogradely labeling them with horseradish peroxidase. We describe the morphology of 27 different types of reticulospinal neurons found in the hindbrain 5 days after fertilization. Nineteen of these types are present as single identified neurons on each side of the brain; the other are present as pairs or small groups of cells.

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