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Scientists demonstrated that applying low-intensity electrical stimulation to the brains of patients with tumors resulted in decreased blood flow within tumors while leaving the rest of the brain unchanged. Although further study is needed, the findings suggest that a series of such treatments could modify tumor growth and progression.

Scientists demonstrated that applying low-intensity electrical stimulation to the brains of patients with tumors resulted in decreased blood flow within tumors while leaving the rest of the brain unchanged. Although further study is needed, the findings suggest that a series of such treatments could modify tumor growth and progression.

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The molecular mechanism used by many bacteria to kill neighboring cells has redundancy built into its genetic makeup, which could allow for the mechanism to be expressed in different environments.

The molecular mechanism used by many bacteria to kill neighboring cells has redundancy built into its genetic makeup, which could allow for the mechanism to be expressed in different environments.

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Researchers have developed a new self-calibrating endoscope that produces 3D images of objects smaller than a single cell. Without a lens or any optical, electrical or mechanical components, the tip of the endoscope measures just 200 microns across, about the width of a few human hairs twisted together.

Researchers have developed a new self-calibrating endoscope that produces 3D images of objects smaller than a single cell. Without a lens or any optical, electrical or mechanical components, the tip of the endoscope measures just 200 microns across, about the width of a few human hairs twisted together.

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'Coprolites' from the Must Farm archaeological excavation in East Anglia, UK, shows the prehistoric inhabitants were infected by parasitic worms that can be spread by eating raw fish, frogs and shellfish.

'Coprolites' from the Must Farm archaeological excavation in East Anglia, UK, shows the prehistoric inhabitants were infected by parasitic worms that can be spread by eating raw fish, frogs and shellfish.

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The study found that 'silent' covert strokes are actually more common than overt strokes in people aged 65 or older who have surgery.

The study found that 'silent' covert strokes are actually more common than overt strokes in people aged 65 or older who have surgery.

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A study has identified a possible second-line treatment for melanoma patients.

A study has identified a possible second-line treatment for melanoma patients.

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Researchers have taken a key step forward in developing a new, possibly safer contrast agent for use in MRI exams.

Researchers have taken a key step forward in developing a new, possibly safer contrast agent for use in MRI exams.

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A new study reports that bullying victimization may increase the risk of suicide attempts among young adolescents by approximately 3-times worldwide.

A new study reports that bullying victimization may increase the risk of suicide attempts among young adolescents by approximately 3-times worldwide.

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When Earth's species were rapidly diversifying nearly 500 million years ago, that evolution was driven by complex factors including global cooling, more oxygen in the atmosphere, and more nutrients in the oceans. But it took a combination of many global environmental and tectonic changes occurring simultaneously and combining like building blocks to produce rapid diversification into new species, according to a new study.

When Earth's species were rapidly diversifying nearly 500 million years ago, that evolution was driven by complex factors including global cooling, more oxygen in the atmosphere, and more nutrients in the oceans. But it took a combination of many global environmental and tectonic changes occurring simultaneously and combining like building blocks to produce rapid diversification into new species, according to a new study.

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Warmer winters are starting to alter the structure of the Black Sea, which could foreshadow how ocean compositions might shift from future climate change, according to new research.

Warmer winters are starting to alter the structure of the Black Sea, which could foreshadow how ocean compositions might shift from future climate change, according to new research.

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