Image of the Day

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image: Image of the Day: Knowing Your Place

Image of the Day: Knowing Your Place

By | April 22, 2016

Floodplain-dwelling Formica selysi ants, marked here with paint to tell them apart, assume specialized positions to form rafts in the event of a flood.

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image: Image of the Day: Keeping Watch

Image of the Day: Keeping Watch

By | April 21, 2016

Intestinal epithelial cells (orange) surround immune surveillance cells called M cells (purple) in this colored micrograph of murine gut tissue.

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image: Image of the Day: Origin Story

Image of the Day: Origin Story

By | April 20, 2016

Gill arches, situated below the eyes in this skeletal preparation of a late-stage little skate (Leucoraja erinacea) embryo, may provide clues about limb evolution in tetrapods.

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image: Image of the Day: Stationary Swimmer

Image of the Day: Stationary Swimmer

By | April 19, 2016

A great crested newt, snapped from below, lies motionless near the surface of a stream in Gelderland, the Netherlands.

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image: Image of the Day: Mullet Marbles

Image of the Day: Mullet Marbles

By | April 18, 2016

Each of these spheres is a developing sea mullet (Mugil cephalus) embryo.

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image: Image of the Day: The Ant Police

Image of the Day: The Ant Police

By | April 15, 2016

Members of an Indian jumping ant colony (Harpegnathos saltator) “police” a nestmate at the center of this image to prevent her rising in the social hierarchy.

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image: Image of the Day: Dancing Diatoms

Image of the Day: Dancing Diatoms

By | April 14, 2016

Didymosphenia geminata or "rock snot" diatoms, eight of which were photographed with interference microscopy and pictured here, can produce slimy nuisance growths in cold, low-nutrient streams.

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image: Image of the Day: Imperiled Peruvian

Image of the Day: Imperiled Peruvian

By | April 13, 2016

The San Martin titi monkey (Callicebus oenanthe)—endemic to Peru—is considered critically endangered.

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image: Image of the Day: Going with the Flow

Image of the Day: Going with the Flow

By | April 12, 2016

A rotating particle that forces swimming bacteria into a spiral helps scientists understand how these microswimmers interact.

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image: Image of the Day: Lethal Light Show

Image of the Day: Lethal Light Show

By | April 11, 2016

Many chemotherapies attack cancer cell DNA. Here, chemo is causing breaks (green) in the chromosomes (blue) of murine tumor cells.

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