Health & Fitness

Unlike humans, zebrafish can completely regenerate their hearts after injury. They owe this ability to the interaction between their nervous and immune systems, as researchers now report.

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Researchers have shown for the first time that hemoglobin, a protein found in red blood cells where it binds oxygen, is also present in the epidermis, our skin's outermost body tissue. The study provides important insights into the properties of our skin's protective external layer.

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If cells in cell cultures grow while being treated with division-suppressing agents, their growth becomes excessive and they permanently lose their ability to divide. However, if the cells are treated with a combination of division inhibitors and growth inhibitors, they remain capable of dividing after these substances have been discontinued. The findings could be transferred to certain cancer therapies, but first need to be clinically tested and confirmed.

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Quiz shows, where contestants answer rapid-fire questions in a high-stress, high-stakes environment, are an integral part of TV programming -- and now they are demonstrating that they have research value, according to a new study. 

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Researchers have shown how the tau protein, known for its role in dementias, behaves where communication in the brain takes place.

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Monitoring brain injury biomarkers and glucose variation in patients who have suffered an acute cranial injury during the entire first week of hospitalization can provide a more accurate picture of the pathological process.

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Scientists have 3D-printed hair follicles in human skin tissue cultured in the lab. This marks the first time researchers have used the technology to generate hair follicles, which play an important role in skin healing and function. When it comes to engineering human skin, hair may at first seem superfluous. However, hair follicles are quite important: They produce sweat, helping regulate body temperature, and they contain stem cells that help skin heal. The finding has potential applications in regenerative medicine and drug testing, though engineering skin grafts that grow hair are still several years away.  

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