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Additional file 4: Invasion of U251MG neurospheres in 3D Matrigel. Video (file format QuickTime, extension.mov) represents the invasion of U251MG neurospheres that are embedded into 3D Matrigel. Images were captured with Cell IQ imaging system using 10x objective. Frames were collected every 30 min during 24 h. Display rate is 7 frames/second. Video is related to Fig. 5f.
