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Image of the Day

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image: Image of the Day: Snake Scuffle

Image of the Day: Snake Scuffle

By | September 25, 2014

Male Indian rat snakes (Ptyas mucosa) engage in a “combat dance” for breeding rights.

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image: Image of the Day: Mimetic Matrix

Image of the Day: Mimetic Matrix

By | September 24, 2014

A silk scaffold (blue) allows neurons (yellow) to grow into three-dimensional tissue that resembles the brain's cortex—a useful research tool.

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image: Image of the Day: Seeking Shelter

Image of the Day: Seeking Shelter

By | September 23, 2014

At sunset on the Ethiopian Highlands, geladas scamper to their sleeping roosts to hide from predators.

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image: Image of the Day: Intimate Relationship

Image of the Day: Intimate Relationship

By | September 22, 2014

Symbiotic nitrogen-fixing bacteria (Sinorhizobium meliloti) form specialized nodules on the roots of the legume Medicago truncatula.

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image: Image of the Day: Hazardous Hairs

Image of the Day: Hazardous Hairs

By | September 19, 2014

The puss caterpillar (Megalopyge opercularis) was named for its resemblance to a kitten, but its hairs contain spines that sting.

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image: Image of the Day: Golden Spiral

Image of the Day: Golden Spiral

By | September 18, 2014

Cells of the marine diatom Chaetoceros debilis (at 250x magnification) form a corkscrew-like chain.

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image: Image of the Day: Pecking Order

Image of the Day: Pecking Order

By | September 17, 2014

Monk parakeets (Myiopsitta monachus), natives of Argentina known for their widespread feral populations, have intricate social networks shaped by both rivalries and alliances.

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image: Image of the Day: Taking the Heat

Image of the Day: Taking the Heat

By | September 16, 2014

A study of brown anole lizards in the Bahamas shows that cold-blooded animals could adapt quickly to climate change by becoming more active at warmer temperatures.

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image: Image of the Day: Preserved Pattern

Image of the Day: Preserved Pattern

By | September 15, 2014

A study of sea lampreys (Petromyzon marinus) suggests that the expression pattern of Hox genes during hindbrain development is conserved between these jawless fish and jawed vertebrates.

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image: Image of the Day: Fiber Former

Image of the Day: Fiber Former

By | September 12, 2014

In a silk gland from the golden orb-web spider (Nephila clavipes), falling pH and surging carbon dioxide pressure launch the synthesis of silk fibers from spidroin proteins.

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