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Figure 5

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ZDB-IMAGE-211201-204
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Figures for Schmitner et al., 2021
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Figure 5

Notch signaling is not re-activated during chronic hyperglycemia. (ad) Tg(tp1:GFP;tp1:hmgb1-mCherry) double transgenic 5 dpf larvae (a) and adults (bd) showed gradual loss of GFP expression in the INL over time, while hmgb1-mCherry expression labeled cells in the INL through adulthood. In some GFP-positive cells at 5 dpf, projections extend along the apical–basal axis (a, inset). In (c), which shows a close-up of the boxed region in (b), GFP and mCherry variably overlap in INL nuclei. At 3 mpf, INL cells show variable levels of mCherry, and are GFP negative (d, inset). GFP and mCherry are coexpressed in retinal and choroidal vessels (d, yellow arrows). (eh) In 6 mpf (e,f) and 10 mpf (g,h) control and pdx1−/− mutants, GFP expression via notch-responsive elements cannot be detected in the neural retina. Expression is limited to retinal and choroidal vessels (yellow arrows). Sections were counterstained with DAPI (blue). Scale bar: 50 µm. (GC, ganglion cell layer; INL, inner nuclear layer; ONL, outer nuclear layer).

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