In what is being called a major scientific breakthrough, researchers at the Scripps Research Institute say they created the first microbes containing artificial DNA. It could not only alter the basic genetic code, the fundamental building blocks of life, but also lead to new drugs and treatments.
"Throughout history, there have been four building blocks in DNA in every organism on earth," CBS News medical contributor Dr. David Agus said. "... And for the first time, they made two new letters - so four letters to six letters to actually make DNA."
He said this changes "everything that's possible." - CBS News
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