Image of the Day

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image: Image of the Day: Made-to-order Heart

Image of the Day: Made-to-order Heart

By | July 22, 2013

Inside a bioreactor, the cells of a human heart are washed away by detergents, leaving a protein scaffolding that can then be injected with heart-muscle precursor cells.

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image: Image of the Day: Butterfly Antenna

Image of the Day: Butterfly Antenna

By | July 19, 2013

Butterflies use their club-shaped antenna for balance as well as sensing odors, wind currents, and possibly the position of the sun.

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image: Image of the Day: Growing Retinal Neurons

Image of the Day: Growing Retinal Neurons

By | July 18, 2013

Photomicrograph of axons sprouting out of mouse embryo retinal neurons cultured in a Petri dish.

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image: Image of the Day: Resplendent Rotifer

Image of the Day: Resplendent Rotifer

By | July 17, 2013

The common rotifer (Philodina roseola), captured here by a polarized light microscope, is a freshwater zooplankton feasted upon by copepods, comb jellies, and fish.

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image: Image of the Day: Merciless MRSA

Image of the Day: Merciless MRSA

By | July 16, 2013

Scanning electron micrograph of methicillin-resistant Staphylococcus aureus, or MRSA, (yellow) and a human neutrophil (red)

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image: Image of the Day: Cedar-apple Rust

Image of the Day: Cedar-apple Rust

By | July 15, 2013

Wind shuttles spores released from a gall on an apple tree to a cedar tree in order to complete the life cycle of the devastating cedar-apple rust.

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image: Image of the Day: Hot Spring Microbes

Image of the Day: Hot Spring Microbes

By | July 12, 2013

At the Grand Prismatic Spring in Yellowstone National Park, yellow and orange bacteria and algae grow in the warm waters around the pool's edge.

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image: Image of the Day: Blood Fluke

Image of the Day: Blood Fluke

By | July 11, 2013

Worms of the genus Schistosoma can take up residence in humans' blood vessels.

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image: Image of the Day: Dazzling Diatom

Image of the Day: Dazzling Diatom

By | July 10, 2013

The diatom Arachnoidiscus has a cell wall made of silica.

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image: Image of the Day: Sweet ‘Stache

Image of the Day: Sweet ‘Stache

By | July 9, 2013

The Emei moustache toad fights off romantic rivals with "nuptial spines" that grow on its upper lip during the breeding season (A) and fall off after the breeding season is over (B)

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