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Fruit fly embryo

Two hour old Drosophila embryo with fluorescently detected protein “Even-skipped” (orange), which is one of the earliest markers of repeated segmentation. Also shown is a mRNA called Kr├╝ppel (blue), which is one of the regulators of Even-skipped. Image by Ashley Jermusky, Sarah Gharavi and Brandon Baker. Research group: Dr. Greg Reeves, Chemical and Biomolecular Engineering.