Medical research

How signalling proteins affect wound healing

What do a scraped knee, a paper cut, or any form of surgery have in common? The short answer is a wound in need of healing—but the long answer lies in a series of biological activities that allow tissues to repair themselves.

Medical research

Solving a biological puzzle: How stress causes gray hair

When Marie Antoinette was captured during the French Revolution, her hair reportedly turned white overnight. In more recent history, John McCain experienced severe injuries as a prisoner of war during the Vietnam War—and ...

Medical research

Serotonin is a master regulator of neuroregeneration

Neuroregeneration entails not only neurogenesis, but also regrowth of lost connections and birth of non-neuronal cells. While adult neurogenesis in humans is only known to occur definitively in a few precisely circumscribed ...

Psychology & Psychiatry

Experiments show altruistic behaviors reduce pain

A team of researchers affiliated with several institutions in China has found that people who engage in altruistic behaviors feel less pain than they otherwise would. In their paper published in Proceedings of the National ...

Diseases, Conditions, Syndromes

French doctor: Virus from China seems less serious than SARS

The lead doctor treating two Paris hospital patients for the new virus in China said Saturday that the illness appears less serious than comparable outbreaks of the past and that the chance of a European epidemic appears ...

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