Ready to see a completely different part of the world? This clip, depicting an immune reaction in the lymph node of a mouse, is the winner in Nikon's second-annual Small World in Motion Photomicography Competition. It was made using a two-photon microscope equipped with an L25.0 x 0.95 water immersion objective. Visit the MicroscopyU website from Nikon Instruments to learn much more about microsopic photography.