http://www.msnbc.msn.com/id/21996417/wid/11915773?GT1=10613Experiments in lab dishes showed that under the right conditions, the menstrual stem cells could turn into more different tissue types ? including bone, blood vessel, fat, brain, lung, liver, pancreas and heart ? than other adult stem cells. The new stem cells also grow readily and rapidly, which is an important advantage because it is difficult to get some types of adult stem cells to give rise to enough cells to be of any medical value.