] Geneballs are tiny particles of silica one-tenth the
] diameter of a human hair. They work like a barcode on a
] can of beans. Each particle contains a warren of tiny
] channels 10 nanometers wide, which soak up fluorescent
] dyes like a sponge. The surface of the geneball is coated
] with a specific chain of DNA, with a unique dye for each
] gene.

This is going to be really amazing if they get it to actually work....the name makes me snicker for some reason though...I think they should change it if/when this is widely used

Wired News: Quick Read on Your Genetics