Figure 7. Neurosphere culture of U87 glioma cells under 1% or 21% oxygen.
Immunofluorescent stain for vimentin in neurosphere cultures. Vimentin-positive spindle-shaped cells (arrows) are visible migrating away from the neurosphere when HIF1α or HIF2α is over-expressed under normoxia. DAPI is blue. Scale bar = 100 μm.