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. 2015 Oct 7;6:8472. doi: 10.1038/ncomms9472

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(a–d) Differential interference contrast (DIC) fluorescence overlay of live human MSCs expressing fluorescent proteins that target mitochondria (green) and phagosomes (red) shows mitochondria being loaded into phagosomes (arrows), which are then shuttled to the plasma membrane for extrusion (also see Supplementary Movie 1). (e–h) Inset shows a representative macrophage interacting with a human MSC. This interaction is shown as a time sequence (5 min intervals) in the lower images and in Supplementary Movie 3. The inset demarcates the area in the human MSC plasma membrane where the membrane blebs outwards and accumulates vesicles. Macrophages nibble the surface of human MSCs and uptake mitochondrial laden phagosomes from blebs budding (arrows) from the plasma membrane of the human MSCs. Scale bars, 10 μ.