See related story: Human Arteries Grow on Scaffolds

Laura Niklason, a practicing physician and bioengineering researcher at Duke University Medical School, helped create functional human arteries in the lab.
Duke University Medical Center
European Molecular Biology Organization
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Telomeres are bundles of DNA that cap each end of chromosomes. As cells get older and divide more, telomeres get shorter. An enzyme called telomerase regulates telomeres and cell division. Cancer tumors have too much teolomerase, while aging cells don't have enough. Here, a cell with mutant telomerase attempts to divide.
The Blackburn Lab, UCSF
European Molecular Biology Organization
journal