Nanomotor in human cells

[Cray]

Cellular-scale motors have been produced and introduced into human cells.
http://www.bbc.co.uk/news/science-environment-26136979

[Rynn]

For clarification the research demonstrated micro sized metal rods that could be introduced to a cell culture and were designed to be highly susceptible to ultrasound. When an external source of ultrasound is applied the rods are thrown about randomly damaging cells in the surrounding area.

An interesting development for cancer therapy. If these could be introduced at a high enough level to a tumour without causing toxicity elsewhere then directed ultrasound could damage the tumour with far greater specificity than radiotherapy.