To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S1 Detailed view of the larvae shown in Fig 1A-H. Individual z-planes are shown as animation. Automated nuclei recognition and ratiometric analysis of fluorescence signals was performed with Imaris (Bitmap). A genetically encoded fluorescent probe for imaging of oxygenation gradients in living Drosophila Peter V. Lidsky, Konstantin A. Lukyanov, Tvisha Misra, Björn Handke, Alexander S. Mishin, and Christian F. Lehner Development 2018. 145:None-None; doi: 10.1242/dev.156257 Download Original Video