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image: Microglia Turnover in the Human Brain

Microglia Turnover in the Human Brain

By Shawna Williams | 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 Andrew F. Read and Peter J. Kerr | 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 Andrew F. Read and Peter J. Kerr | 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 Claire Asher | 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 Claire Asher | 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 Ashley P. Taylor | 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 Ashley Yeager | 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: Water Level in a Cell Can Determine Its Fate

Water Level in a Cell Can Determine Its Fate

By Kerry Grens | September 27, 2017

Adding or removing water changes how stem cells differentiate.

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image: How Poison Frogs Avoid Poisoning Themselves

How Poison Frogs Avoid Poisoning Themselves

By Abby Olena | 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: CRISPR Used in Human Embryos to Probe Gene Function

CRISPR Used in Human Embryos to Probe Gene Function

By Ashley P. Taylor | September 20, 2017

OCT4 is necessary for blastocyst formation in the human embryo, researchers report.

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