http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Our cells' molecules form an intricate network of interactions. Today's techniques, however, can only be used to measure individual molecular reactions outside the cells. Since molecular concentrations are much higher in cells than in the laboratory, scientists suspect that the kinetics of molecular reactions in living cells differ substantially from external probes. http://www.physorg.com/news180181367.html Biology Wed, 16 Dec 2009 10:23:29 EST news180181367 (PhysOrg.com) -- Researchers at the University of Illinois have developed a membrane-penetrating nanoneedle for the targeted delivery of one or more molecules into the cytoplasm or the nucleus of living cells. In addition to ferrying tiny amounts of cargo, the nanoneedle can also be used as an electrochemical probe and as an optical biosensor. http://www.physorg.com/news160142450.html Nanotechnology Tue, 28 Apr 2009 13:02:03 EST news160142450 Biomedical engineers have developed a new type of probe that allows them to visualize single ribonucleic acid (RNA) molecules within live cells more easily than existing methods. The tool will help scientists learn more about how RNA operates within living cells. http://www.physorg.com/news158245779.html Chemistry Mon, 06 Apr 2009 14:10:04 EST news158245779 (PhysOrg.com) -- A University of Glasgow scientist was part of a team of researchers which has, for the first time, been able to determine the three-dimensional structure of protein in living cells. http://www.physorg.com/news155489870.html Biology Thu, 05 Mar 2009 15:38:25 EST news155489870 (PhysOrg.com) -- A multidisciplinary team at the Massachusetts Institute of Technology (MIT) has developed carbon nanotubes that can be used as sensors for cancer drugs and other DNA-damaging agents inside living cells. The sensors, made of carbon nanotubes wrapped in DNA, can detect chemotherapy drugs such as cisplatin as well as environmental toxins and free radicals that damage DNA. http://www.physorg.com/news151345478.html Nanotechnology Fri, 16 Jan 2009 16:24:38 EST news151345478 MIT engineers have developed carbon nanotubes into sensors for cancer drugs and other DNA-damaging agents inside living cells. http://www.physorg.com/news148485566.html Nanotechnology Sun, 14 Dec 2008 13:59:26 EST news148485566 Researchers in Missouri have borrowed the technology that living cells use to produce energy to develop a tiny, self-powered sensor for rapid detection of hidden explosives. The experimental sensor, about the size of a postage stamp, represents the first of its kind to be powered by mitochondria, the microscopic "powerhouses" that provide energy to living cells, the researchers say. Their study is scheduled for the November 26 issue of the weekly Journal of the American Chemical Society. http://www.physorg.com/news146141371.html Chemistry Mon, 17 Nov 2008 10:49:31 EST news146141371