To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2 Video example of the negative geotaxis impairment in D25 neuronal KD flies (left) compared to their control (right). Feeding difficulties, a key feature of the Drosophila NDUFS4 mitochondrial disease model Sarah Foriel, Julien Beyrath, Ilse Eidhof, Richard J. Rodenburg, Annette Schenck, and Jan A. M. Smeitink Disease Models and Mechanisms 2018. 11:None-None; doi: 10.1242/dmm.032482 Download Original Video