Mitochondrial dynamics in wild-type and mito-QC MEFs. Mixed cultures of wild-type and heterozygous mito-QC MEFs were labeled with MitoTracker far red. Live-cell imaging shows GFP-positive mito-QC cells, and far red (red)–positive wild-type and mito-QC cells. White dots mark wild-type cells (GFP negative). Bar, 20 µm.
