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Neuroscience

Size of connections between nerve cells determines their signaling strength

The neocortex is the part of the brain that humans use to process sensory impressions, store memories, give instructions to the muscles, and plan for the future. These computational processes are possible because each nerve ...

Diseases, Conditions, Syndromes

Study makes the case for shorter quarantines—with 'judicious' testing

When Yale researchers reported in December that a seven-day quarantine, coupled with carefully timed testing, could be as effective as a 14-day quarantine in preventing the spread of COVID-19, it attracted widespread media ...

Diseases, Conditions, Syndromes

For some, GI tract may be vulnerable to COVID-19 infection

No evidence so far indicates that food or drinks can transmit the virus that causes COVID-19, but new research at Washington University School of Medicine in St. Louis suggests that people with problems in the upper gastrointestinal ...

Medical research

New study on the role of monocytes in sarcoidosis

The cause of the inflammatory lung disease sarcoidosis is unknown. In a new study, researchers at Karolinska Institutet have investigated whether a type of immune cell called a monocyte could be a key player in sarcoidosis ...

Obstetrics & gynaecology

Important cause of preeclampsia discovered

Despite being the subject of increasing interest for a whole century, how preeclampsia develops has been unclear—until now.

Medical research

The physics behind tumor growth

Researchers at Duke University have developed a predictive theory for tumor growth that approaches the subject from a new point of view. Rather than focusing on the biological mechanisms of cellular growth, the researchers ...

Diseases, Conditions, Syndromes

Some COVID-19 mutations may dampen vaccine effectiveness

Scientists are reporting troubling signs that some recent mutations of the virus that causes COVID-19 may modestly curb the effectiveness of two current vaccines, although they stress that the shots still protect against ...

Oncology & Cancer

New studies clarify which genes may raise breast cancer risk

Two large studies give a much sharper picture of which inherited mutations raise the risk of breast cancer for women without a family history of the disease, and how common these flawed genes are in the general population.

Diseases, Conditions, Syndromes

S.Africa virus strain poses 're-infection risk': study

The coronavirus variant detected in South Africa poses a "significant re-infection risk" and raises concerns over vaccine effectiveness, according to preliminary research Wednesday, as separate studies suggested the British ...

Neuroscience

Study reveals immune driver of brain aging

Suppose Smokey the Bear were to go on a tear and start setting forest fires instead of putting them out. That roughly describes the behavior of certain cells of our immune system that become increasingly irascible as we grow ...