http://www.nytimes.com/2015/12/30/opinion/your-cells-their-research-your-per mission.html?emc=edit_th_20151230 <http://www.nytimes.com/2015/12/30/opinion/your-cells-their-research-your-pe rmission.html?emc=edit_th_20151230&nl=todaysheadlines&nlid=26106573&_r=0> &nl=todaysheadlines&nlid=26106573&_r=0 ... Tissues from millions of Americans are used in research without their knowledge. These "clinical biospecimens" are leftovers from blood tests, biopsies and surgeries. If your identity is removed, scientists don't have to ask your permission to use them. How people feel about this varies depending on everything from their relationship to their DNA to how they define life and death. Many bioethicists aren't bothered by the research being done with those samples - without it we wouldn't have some of our most important medical advances. What concerns them is that people don't know they're participating, or have a choice. This may be about to change.