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Nano-sized particles have been engineered in a new way to improve detection of tumors within the body and in biopsy tissue, a research team in Sweden reports. The advance could enable identifying early stage tumors with lower doses of radiation.
The cause of Earth’s deepest earthquakes has been a mystery to science for more than a century, but a team of Carnegie scientists may have cracked the case. New research published provides evidence that fluids play a key role in deep-focus earthquakes—which occur between 300 and 700 kilometers below the planet’s surface. The research team includes Carnegie scientists Steven
Greninger lab In SARS-CoV-2-infected cells (green), mRNA (red) is trapped in the nucleus. The blue represents the DNA of the nucleus. New research has uncovered a way SARS coronaviruses delay an immune defense against them. The coronavirus responsible for the SARS outbreak of 2003 and the one causing the current pandemic may prevent cells from responding to infection in a similar manner. They do this by making a viral protein that keeps molecules from moving through pores in the membrane that separates a cell nucleus from the surrounding cytoplasm. “With these pores blocked, infected cells ...
Scientists develop new type of artificial muscle for use in miniature robots University of Wollongong (UOW) researchers have mimicked the supercoiling properties of DNA to develop a new type of artificial muscles for use in miniature robot applications. Their research is published today (Thursday 29 April AEST) in Science Robotics. One of the challenges to the miniaturisation of robotics technology – such as developing micro-tools for remote robotic surgery – is that conventional mechanical drive systems (or “actuators”) are difficult to downsize without loss of performance. Artificia...
Researchers investigate how oxygen radicals protect against cancer Originally, oxygen radicals - reactive oxygen species, or ROS for short - were considered to be exclusively harmful in the body. They are produced, for example, by smoking or UV radiation. Because of their high reactivity, they can damage many important molecules in cells, including the hereditary molecule DNA. As a result, there is a risk of inflammatory reactions and the degeneration of affected cells into cancer cells. Because of their damaging effect, however, ROS are also deliberately produced by the body, for example by ...