Every year, Nikon's Small World in Motion Competition rounds up the best microscopic videos from scientists across the world. The winners of the 2012 competition have just been announced, and the results are strange but beautiful.
The video above, filmed by Dr. Olena Kamenyeva from the National Institute of Health, took first place. It shows the immune response in the lymph node of a mouse, when it was activated by a laser—and it's deeply mesmerizing.
You can find a round-up of other notable entries over on the Nikon website . [Nikon ]