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image: Microglia Turnover in the Human Brain

Microglia Turnover in the Human Brain

By | October 1, 2017

Researchers find that about a quarter of the immune cells are replaced every year.

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image: Do Pathogens Gain Virulence as Hosts Become More Resistant?

Do Pathogens Gain Virulence as Hosts Become More Resistant?

By | October 1, 2017

Emerging infections provide clues about how pathogens might evolve when farm animals are protected from infection.

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image: Infographic: Evolving Virulence

Infographic: Evolving Virulence

By | October 1, 2017

Tracking the myxoma virus in the wild rabbit populations of Australia has yielded insight into how pathogens and their hosts evolve.

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image: Infographic: Macrophages Around the Body

Infographic: Macrophages Around the Body

By | October 1, 2017

In addition to circulating in the blood as immune sentinels, macrophages play specialized roles in different organs around the body.

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image: Macrophages Are the Ultimate Multitaskers

Macrophages Are the Ultimate Multitaskers

By | October 1, 2017

From guiding branching neurons in the developing brain to maintaining a healthy heartbeat, there seems to be no job that the immune cells can’t tackle.

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image: In Canada, Signs of Life Nearly 4 Billion Years Old

In Canada, Signs of Life Nearly 4 Billion Years Old

By | September 28, 2017

Embedded within 3.95-billion-year-old rock, scientists have found graphite with a carbon signature that indicates biological activity.

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image: Coastal Critters Make Epic Voyages After 2011 Tsunami

Coastal Critters Make Epic Voyages After 2011 Tsunami

By | September 28, 2017

Marine species survived rafting thousands of kilometers on debris swept into the water by the giant wave, scientists say.

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image: How Poison Frogs Avoid Poisoning Themselves

How Poison Frogs Avoid Poisoning Themselves

By | September 21, 2017

Amphibians resist their own chemical defenses with amino acid modifications in the sequence for a target receptor.

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image: Second Chance for Lost Galapagos Tortoises?

Second Chance for Lost Galapagos Tortoises?

By | September 14, 2017

Researchers are trying to recreate an extinct species of the lumbering reptiles by breeding closely related species that contain traces of the lost lineage’s DNA.

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A study of a simple marine animal suggests that the common ancestor of cnidarians and bilaterians may have had three germ layers instead of two.

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