We're never disappointed with the photos from the Nikon Small World contest, and the top 20 judges picks contained in this gallery suggest that the photographers just keep getting better. This year's winners include images of a dinosaur bone, a microchip, a mouse nerve and HeLa cells.
A mosquito heart. The photograph by Jonas King, a researcher from the Vanderbilt University, Department of Biological Sciences, Nashville, Tennessee, USA, was taken using the fluorescence microscopy technique and technology.
G-actin is a protein involved in muscle contraction. It forms loose bundles that self-organize into regular patterns. The image was captured using total internal reflectance fluorescence (TIRF) microscopy. Dennis Breitsprecher
Fluorescence microscopy of endothelial cells using three labels. Red lables the mitochondria, green lables the F-actine cytoskeleton and blue lables the nucleus- fluorescence microscopy produces the most beautiful images
Lovely Lymphatics | Irina Gurevich, Immunology Department. The image depicts lymphatic vessels (red) and some protein signaling molecules (blue) in a deep layer of a mouse skin (dermis). The vessels and the proteins were stained with specific fluorescent dyes, which allowed to visualize particularly the arrangement of those structures using a fluorescent microscopy technique.