DNA Typewriter

Quite interesting.

 DNA Typewriter Taps Out a Record Inside Cells

Howard Hughes Medical Institute News, July 8, 2022

Researchers at Howard Hughes Medical Institute (HHMI) have developed a DNA typewriter that can encode text in cells. The researchers chose messages with historical significance, including quotes from Samuel F.B. Morse’s first long-distance telegraph transmission and Alexander Graham Bell’s first telephone call, as well as a lyric translated from a Korean pop song. Said HHMI's Jay Shendure, "We have accomplished something that's analogous to writing. We can create thousands of symbols, which we call barcodes, and we can capture them in order." The DNA typewriter can accommodate up 4,096 barcodes (short pieces of DNA), placing them one at a time from left to right. The researchers were able to track cell division by tagging dividing cells with barcodes. ....'