In the liver or even the brain of a cancer patient, carbon molecules shaped like soccer balls seek out malignant cells and bombard them with anticancer drugs.
This image may become reality in the not so distant future, thanks to a clump of 60 carbon atoms called fullerene.
A molecule of fullerene, a third form of carbon after diamond and graphite, has a diameter of about 0.7 nanometers. One nanometer is equal to 1 billionth of a meter.