People need to sleep, and sleep deprivation can cause many changes in the brain. But we have a poor understanding of why sleep is so crucial. New research has examined a fruit fly model to assess how ...
Recent work has revealed some of the many crucial functions of astrocytes, brain cells that were once thought to play primarily supportive roles for neurons. Astrocytes do handle debris around neurons ...
Scientists have discovered that cells can sense far beyond the surfaces they touch. While individual cancer cells can probe ...
This is a top-down cross-section of one of the 3D hollow spheres (lumenoids) that our cells can create. The different colors are for different proteins, which allows you to see some striking ...
Immune cells called B cells make antibodies that fight off invading bacteria, viruses and other foreign substances. During their preparation for this battle, B cells transiently revert to a more ...
When the brain rests, it usually replays recent experiences to strengthen memory. Scientists found that in Alzheimer’s-like mice, this replay still occurs — but the signals are jumbled and poorly ...
For many years, biology textbooks have explained hair growth in a simple way. They say that new cells form at the bottom of the hair root. As these cells divide and multiply, they push older cells ...
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