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image: Plant Cell Walls Can Control Growth in the Dark

Plant Cell Walls Can Control Growth in the Dark

By Kerry Grens | February 1, 2018

To maintain an energy-saving growth strategy in the absence of light, seedlings need signals generated by pectin in their cell walls.

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image: Distinct Regions Drive Responses to Anxiety, Fear

Distinct Regions Drive Responses to Anxiety, Fear

By Catherine Offord | January 1, 2018

Researchers map brain activity associated with a person’s anticipation of or direct confrontation with danger.

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A single receptor on natural killer cells recognizes an amino acid sequence conserved across Zika, dengue, and related pathogens.

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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: How Immune Receptors Got into Mouse Noses

How Immune Receptors Got into Mouse Noses

By Shawna Williams | September 1, 2017

A study traces proteins’ evolution from the immune to the olfactory system.

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Using single-cell RNA sequencing, scientists characterize new populations of dendritic cells and monocytes.

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image: Long-Term Memory Storage Begins Immediately

Long-Term Memory Storage Begins Immediately

By Kerry Grens | June 1, 2017

In mice, cells in the prefrontal cortex—where memories are maintained long-term—start to encode a fearful experience right from the start.

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Time-lapse imaging shows the immune cells transferring chemical signals during pigment pattern formation in developing zebrafish.

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 Zebra finches reared by another species learn to sing their foster parents’ song with rhythms characteristic of their genetic background.

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Zebra finches dial down dopamine signaling when they hear errors in a song performance.

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