An undated photo of Andre Davis provided by the Illinois Department of Corrections before his release in July 2012 on exculpatory DNA evidence. Davis is now facing a new murder charge.
Being able to insert the two man-made letters into DNA, alongside the usual four-letter alphabet, could teach old cells new tricks and lead to better drugs, researchers say.
courtesy of Synthorx
A Thai medic checks bodies for forensic identity in Phang Nga province in southern of Thailand on Jan. 11, 2005. Thousands of people were killed in Thailand after a massive tsunami struck on Dec. 26, 2004.
Pornchai Kittiwongsakul/AFP/Getty Images
A technician loads patient samples into a machine for testing at Myriad Genetics in Salt Lake City in 2002. The Supreme Court ruled Thursday that Myriad cannot patent the BRCA genes, which are tested to check a woman's risk for breast and ovarian cancer.
Douglas C. Pizac/AP