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The pattern of retrograde labeling (dots) observed in the peri interstitial nucleus of Cajal portion of the mesencephalic reticular formation (piMRF) (A) and the central mesencephalic reticular formation (cMRF) (B–F) after an injection of BDA into the oculomotor nucleus (III) and supraoculomotor area (SOA) (A–E). In the cMRF, the cells are arranged as a band stretching across the mediolateral breadth of the nucleus.
