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) -- Cellular engineers at the University of Pennsylvania have determined that cardiomyocytes, the specialized cells that form the heart muscle, thrive when cultured in an environment that mimics their own elastic nature but falter, weaken or die when `grown` on stiffer or softer materials. http://www.physorg.com/news150568853.html Biology Wed, 07 Jan 2009 16:40:53 EST news150568853