A Drop of Blood Tells Its Story Through a Single Molecule
A drop of blood is a bustling city in miniature. Thousands of different molecules scurry through it, each leaving its own trace. But peering directly into this city is hard: the streets are tangled, and there are so many inhabitants that counting them all individually is out of the question.
Scientists have found a way to listen to the whole city at once, without singling out its residents.