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. 2016 Dec 9;7:609. doi: 10.3389/fphys.2016.00609

Figure 4.

Figure 4

Hypoxic c-FOS-positive cells of the RTN/pFRG in one-day-old mice are not immunolabeled for PHOX2B. Drawing illustrating the distribution of cells immunoreactive for c-FOS and PHOX2B in the RTN/pFRG (A). Scale bar = 100 μm. Solid black triangles indicate neurons that express PHOX2B and white points indicate c-FOS-positive neurons. Photomicrographs of a section double-immunolabeled for c-FOS (in red, B,D) and PHOX2B (in green, C,D) in the RTN/pFRG corresponding to the region outlined by the black rectangle (A). Scale bar = 50 μm. n7, facial nucleus; RTN/pFRG, retrotrapezoid nucleus/parafacial respiratory group.