Table 1. Mean Number (± Standard Error) of DiI-Labeled Neurons within Seven Medullary and Mesopontine Structures in P8 Rats.

DiI was infused into the medial or lateral medulla. See Figure 1 for location and extent of infusion sites

Gi, nucleus gigantocellularis; DR, dorsal raphé; LC, locus coeruleus; LDT, laterodorsal tegmental nucleus; PC, nucleus pontis caudalis; PO, nucleus pontis oralis; SubLC, subcoeruleus