File:GreenBlueStemCells.jpg

Summary
A line of human embryonic stem cells derived at Stanford University, 09 March, 2009.

The nuclei in green are stained for a protein that is found only in embryonic stem cells while blue represents the DNA of the surrounding feeder cells.

Reuters Pictures / California Institute for Regenerative Medicine, found at: DayLife.com, All contents © copyright 1999-2009 Getty Images, Inc. All rights reserved.