The incredible play on color exhibited by this liquid crystalline DNA specimen is simply beautiful. Focal conic textures resembling fans form a unique pattern that shifts from purple to yellowish-orange in color. The DNA concentration for this specimen is approximately 400 milligrams per millimeter, and the magnification is approximately 375x. The digital image presented above was originally recorded on Fujichrome 64T transparency film using a Nikon Optiphot-Pol microscope with crossed polarized illumination. Exposures were recorded about 2.5 f-steps under the recommended value given by an in-camera photomultiplier and were push-processed approximately 1.5 f-steps in the first E-6 developer.
http://micro.magnet.fsu.edu/dna/pages/highdensity22.html
