http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. (Medical Xpress) -- Tumors are complex systems of cells, only some of which may be cancerous. Also, two samples from different areas of a single tumor are rarely identical. To gather important information about tumors, researchers must analyze very small samples because they are more likely homogenous — enriched for either normal cells or cancerous cells. http://medicalxpress.com/news/2012-03-approach-breast-cancer.html Cancer Mon, 19 Mar 2012 09:58:57 EST news251369930 In this week's PLoS Medicine, Mona Loutfy of the University of Toronto, Canada and colleagues report their study examining experiences of stigma and coping strategies among HIV-positive women in Ontario, Canada. http://medicalxpress.com/news/2011-11-stigma-hiv-positive-women-complex-overlapping.html HIV & AIDS Tue, 22 Nov 2011 17:26:14 EST news241205156 Taking aim at the alarming slowdown in the development of new and lifesaving drugs, Harvard Medical School is launching an Initiative in Systems Pharmacology, a comprehensive strategy to transform drug discovery by convening biologists, chemists, pharmacologists, physicists, computer scientists and clinicians to explore together how drugs work in complex systems. http://medicalxpress.com/news/2011-10-harvard-medical-school-major-crisis.html Medical research Mon, 17 Oct 2011 12:49:02 EST news238074532 An article demonstrating how tools for modeling traffic on the Internet and telephone systems can be used to study information flow in brain networks will be published in the open-access journal PLoS Computational Biology on 2nd June 2011. http://medicalxpress.com/news/2011-06-brain-neural-super-highway.html Neuroscience Thu, 02 Jun 2011 17:29:21 EST news226254482