http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. (Medical Xpress)—Growing new blood vessels in the lab is a tough challenge, but a Johns Hopkins engineering team has solved a major stumbling block: how to prod stem cells to become two different types of tissue that are needed to build tiny networks of veins and arteries. http://medicalxpress.com/news/2012-12-stem-cells-blocks-blood-vessels.html Cardiology Thu, 20 Dec 2012 15:45:42 EST news275240732