Patterns of new DNA letter in brain suggest distinct function
Monday, October 31, 2011 - 14:31
in Biology & Nature
In 2009, the DNA alphabet expanded. Scientists discovered that an extra letter or "sixth nucleotide" was surprisingly abundant in DNA from stem cells and brain cells. Now, researchers have mapped the patterns formed by that letter in the brains of mice, observing how its pattern of distribution in the genome changes during development and aging.