http://www.blog.speculist.com/archives/001719.html
Scanned by: Accel Roseover 5 years ago
Joseph DeSimone, a chemical engineer at the University of North Carolina at Chapel Hill, has created tiny sacks of the polymer polyethylene glycol just 8 micrometres across – in the range of human red blood cells – that are capable of deforming in a way that allows them to pass through the tiniest capillaries.