Tiny tech sparks cell signal find

By Jason Palmer
Science and technology reporter, BBC News

Tiny metal particles have been shown to cause changes to DNA across a cellular barrier - without having to cross it.

The nanometre and micrometre scale particles resulted in an increase of damage to DNA across the barrier via a never-before-seen cell signal process.

Reporting in Nature Nanotechnology, the researchers say the mechanism could be both a risk and an opportunity.