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Image of the Day

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image: Image of the Day: Parchment Worm

Image of the Day: Parchment Worm

By | March 13, 2013

The marine worm Chaetopterus variopedatus lives in a tube buried in the sand in shallow water and stores its gametes in leg-like appendages, called parapodia.

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image: Image of the Day: Psychedelic Bacteria

Image of the Day: Psychedelic Bacteria

By | March 12, 2013

A biofilm of Bacillus subtilis, with lineages of bacteria stained using different fluorescent proteins to track their growth.

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image: Image of the Day: Mosquito's Knee

Image of the Day: Mosquito's Knee

By | March 11, 2013

The scales and tiny hairs on a mosquito's leg help the insect fly and regulate its temperature.

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image: Image of the Day: Frog Development

Image of the Day: Frog Development

By | March 8, 2013

The red-eyed tree frog Agalychnis callidryas lays her gelatinous eggs on leaves above pools of water.

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image: Image of the Day: Glowing Mice

Image of the Day: Glowing Mice

By | March 7, 2013

A normal mouse sits between two mice engineered to express green fluorescent protein.

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image: Image of the Day: Transparent Frog

Image of the Day: Transparent Frog

By | March 6, 2013

The organs of the glass frog, Hyalinobatrachium colymbiphyllum, are visible through its skin.

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image: Image of the Day: Clingy Worms

Image of the Day: Clingy Worms

By | March 5, 2013

The parasite Schistosoma burrows through human skin, attaches to veins with a sucker (pictured here), and lays eggs, which the body expels in fecal matter, ready to infect anew.

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image: Image of the Day: Feeding Love

Image of the Day: Feeding Love

By | March 2, 2013

A male European bee-eater catches an insect to feed his mate as part of a courtship ritual.

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image: Image of the Day: Rat-Kangaroo Cell Divides

Image of the Day: Rat-Kangaroo Cell Divides

By | March 1, 2013

During the metaphase stage of mitosis, the chromosomes (blue) align in the center of the cell, as the microtubules (red) prepare to pull them in opposite directions, dragging them by their kinetochores (green).

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image: Image of the Day: Nervous System Stars

Image of the Day: Nervous System Stars

By | February 28, 2013

Neural progenitor cells (green) develop into astrocytes (orange), which are found throughout the central nervous system and play important roles in synapse function, neural injury response, and other processes.

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