Stress Turns Hair Gray By Depleting Pigment-Producing Stem Cells
Stress Turns Hair Gray By Depleting Pigment-Producing Stem Cells
In mice, the fight-or-flight response overactivates the cells, causing a drop in their numbers, which leads to loss of hair color.
Stress Turns Hair Gray By Depleting Pigment-Producing Stem Cells
Stress Turns Hair Gray By Depleting Pigment-Producing Stem Cells

In mice, the fight-or-flight response overactivates the cells, causing a drop in their numbers, which leads to loss of hair color.

In mice, the fight-or-flight response overactivates the cells, causing a drop in their numbers, which leads to loss of hair color.

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Image of the Day: Eyed Elater
Image of the Day: Eyed Elater
Amy Schleunes | Jan 23, 2020
The click beetle’s intricate false eyes cast a deep black color with the help of pigment-coated hairs.
Image of the Day: Black Cats
Image of the Day: Black Cats
Emily Makowski | Dec 19, 2019
Melanism in felines is both helpful and harmful.
Image of the Day: Ochre Paint
Image of the Day: Ochre Paint
Emily Makowski | Nov 26, 2019
This ancient red pigment came from underwater.
Image of the Day: Red-Feathered Finches
Image of the Day: Red-Feathered Finches
Emily Makowski | Sep 30, 2019
Scientists uncover a potential reason why redder house finches have better health.
Lack of Diversity in Genetic Datasets is Risky for Treating Disease
Lack of Diversity in Genetic Datasets is Risky for Treating Disease
Ashley Yeager | Mar 21, 2019
Certain populations have been historically underrepresented in genome sequencing studies, but the NIH, private clinics, and 23andMe and other companies are trying to fix that.
Image of the Day: Roses Are Red, Poppies Are Too
Image of the Day: Roses Are Red, Poppies Are Too
Carolyn Wilke | Feb 14, 2019
New research shows how they get their deep hue.
Image of the Day: <em>Xenopus</em> Pigment
Image of the Day: Xenopus Pigment
The Scientist Staff | May 18, 2018
Researchers recently used CRISPR single-guide RNAs to alter genes involved in pigmentation in frog embryos.
Image of the Day: Living Color
Image of the Day: Living Color
The Scientist Staff, The Scientist Staff | Mar 8, 2018
Biodegradable pigments could be custom-grown by bacteria in the future, say researchers.  
Hungry Macrophages Keep Tattoos on Mice’s Skin
Hungry Macrophages Keep Tattoos on Mice’s Skin
Diana Kwon | Mar 7, 2018
A new study reveals that a constant stream of ink-gobbling immune cells helps hold tattoos in place.