Going nano to see viruses 3-D

'Technical tour de force' is first step to seeing proteins in 3-D

Physicists have created an MRI-like machine capable of making three-dimensional scans of single virus particles — a resolution 100 million times higher than previously possible.

The achievement is a step toward imaging individual proteins, the knotted molecules that assemble to form viruses and that play a central role in the chemistry of all life.