N***n Small World Photomicrography Competition
http://www.boston.com/bigpicture/2011/10/nikon_small_world_photomicrogr.html
Almost 2000 entries from 70 countries vied for recognition in the 37th annual contest, which celebrates photography through a microscope.
Par exemple :
The venation network of a young quaking aspen leaf (Populus tremuloides) was magnified 4 times by Benjamin Blonder and David Elliott of the University of Arizona in Tucson utilizing a brightfield image of safranin-stained tissue. (Benjamin Blonder and David Elliott)
http://inapcache.boston.com/universal/site_graphics/blogs/bigpicture/nikon_small_world_2011/bp19.jpg