(A) schematic and imaging (B) of the transversal views indicate the localization of the cross section; the red squares indicate the area where the images were taken and colors indicate the localization and conditions under which PHDs-IR was observed (i.e., pink indicate N5/A5R24h). Immunolabeling of anti-PHDs (gold) co-labeled with phalloidin (purple) and DAPI (cyan) in (C) normoxia (5-day), (D) anoxia (5-day) and (E) after reoxygenation (5-day anoxia followed by 24hrs of reoxygenation). Scale bar = 400 µm (B), and 40 µm (C-E). IL inferior lobe, MB midbrain, OT optic tectum, VTA ventral tegmental area.