But IBM hopes to change all that. IBM scientists have developed what they call a "DNA transistor". The transistor is a tube only a couple of atoms in diameter that pulls the DNA through, while sensors in the walls of the tube read the base pairs. This process simulates natural protein pores in cells that evolve specifically to read DNA strands. By running an entire genome through the tube, IBM hopes to lower the cost of sequencing an entire genome down to $1,000.