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Genetic Switches Behind Human Brain Evolution

The human brain differs from that of mice and monkeys because of its large cerebral cortex. The organ's most highly developed part, the cerebral cortex is responsible for thinking, perceiving and sophisticated communication. Scientists are just beginning to understand the molecular and cellular mechanisms that drive the growth of the

Alcohol Damages DNA and Increases Cancer Risk

Much previous research looking at the precise ways in which alcohol causes cancer has been done in cell cultures. But in this study, researchers have used mice to show how alcohol exposure leads to permanent genetic damage. Scientists at the MRC Laboratory of Molecular Biology, Cambridge, gave diluted alcohol, chemically known

Harnessing sperm to treat gynecological Diseases

Creating an effective way to target cancer cells with drugs is challenging on multiple fronts. For example, the drugs don't always travel deeply enough through tissues, and they can get diluted in body fluids or sidetracked and taken up by healthy organs. To get around these issues, scientists have turned

Rate and Risk of Head Injury in Mixed Martial Arts Remain Unknown

Researchers at St. Michael's Hospital reviewed 18 studies involving 7,587 patients, examining head injuries in MMA fighting published between 1990 and 2016. Of the studies included in the review, published online in the journal Trauma, there was no consistent definition of head injury, concussion or traumatic brain injury, or consistent protocol for

Hunting for Immune Cells’ Cancer Targets

The screening technology, developed by Howard Hughes Medical Institute Investigator (HHMI) Christopher Garcia and colleagues after almost 20 years of basic molecular studies of the immune system, may ultimately lead to more effective immunotherapies, which harness the body's immune system to fight cancer. "This is going to widen the scope

New Methods Reveal the Biomechanics of Blood Clotting

The extensive results are published in two separate studies, in the Proceedings of the National Academy of Sciences (PNAS) and in Nature Methods. "We show conclusively that, in order to activate clotting, the cell needs a targeted force of a magnitude of just a few piconewtons -- or a force about a billion times

Fighting Myocardial Infarction with Nanoparticle Tandems

In a heart attack, clots usually lead to persistent circulatory problems in parts of the heart muscle, which then cause heart muscle cells to die. Attempts have been made for some time to revitalize the damaged heart tissue with replacement cells. "However, most of the cells are pushed out of

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