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. (PhysOrg.com) -- The mechanism used by 'Natural Killer' immune cells in the human body to distinguish between diseased cells, which they are meant to destroy, and normal cells, which they are meant to leave alone, is revealed in new detail in research published today in PLoS Biology. http://www.physorg.com/news167989314.html Medicine & Health Tue, 28 Jul 2009 09:30:01 EST news167989314 Scientists used to think most of the exchange of information between cells was conducted at the surface, where cell receptors receive signals from other cells. http://www.physorg.com/news156711582.html Medicine & Health Thu, 19 Mar 2009 20:00:38 EST news156711582 Cornell researchers have provided new insight into the molecular mechanism underlying an essential cellular system. They have discovered how receptors on cell surfaces turn off signals from the cell's environment, a function that is vital for cell functions such as growth, division and death. http://www.physorg.com/news151344416.html Biology Fri, 16 Jan 2009 16:06:56 EST news151344416 A study from a team of researchers led by Dr. Andrew P. Makrigiannis, Director of the Molecular Immunology Research Unit at the IRCM, has identified a new mechanism regulating interferon production. This discovery, co-authored by scientists from the International Medical Center of Japan (Tokyo), the National Cancer Institute at Frederick (Maryland) and the McGill Centre for the Study of Host Resistance, was published on December 22, 2008 in the Journal of Experimental Medicine. http://www.physorg.com/news150996491.html Medicine & Health Mon, 12 Jan 2009 15:28:11 EST news150996491