This video is an animation of cellular activity. The animators tried to make the cells and cellular structures true to life. Colour is added, and there is more space in the animation: cells are packed full and structures would be difficult to discern with an accurate spatial rendering, though shape and scale are probably accurate.
What struck me first on seeing this, other than the cell being sublimely impressive, was that God must have had such a fun time designing life. It must have brought him so much pleasure.
More on the making of this animation here.
A longer 8 minute video with commentary available here. Well worth the time.