Researchers have made a microscopic Tic-Tac-Toe board with self-assembling DNA tiles.

To play the game, they have developed tiles that are dynamic, so that they could be reshaped after had been built. This new technique makes use of swapping in and out hundreds to DNA strands at once. While the Tic-Tac-Toe play might be amusing, it is just a first try to use technology to develop nanomachines that can be modified or repaired after they have already been built.

By the way, “X” won the Tic-Tac-Toe game in the testtube after six days of play…..

Read the full story: Caltech
Scientific publication: Nature Communications