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See the year's best pictures of the hidden microscopic world

National Geographic Logo By Michael Greshko of National Geographic | Slide 1 of 20: Microscopy technician Teresa Zgoda and student Teresa Kugler, a recent graduate of Rochester Institute of Technology, painstakingly stacked and stitched together hundreds of images to create this winning mosaic of a fluorescent turtle embryo.

Microscopy technician Teresa Zgoda and student Teresa Kugler, a recent graduate of Rochester Institute of Technology, painstakingly stacked and stitched together hundreds of images to create this winning mosaic of a fluorescent turtle embryo.

© Image by Teresa Zgoda and Teresa Kugler

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