Nikon has announced the winners of the 42nd annual Nikon Small World Photomicrography Competition. From zebrafish to coffee crystals to human skin cells, the top entries did not disappoint.
First place went to Oscar Ruiz for his microscopic view of the facial development of a four-day-old zebrafish embryo. Ruiz works in the University of Texas MD Anderson Cancer Center in Houston. He uses zebrafish to study genetic mutations that lead to facial abnormalities such as cleft lip and palate in humans. The zebrafish selfie (below) was tops among 70 other winning snaps, those works besting some 2,000 worldwide entries.