Genomic Health, Inc. Stock up 18% today

I noticed this while looking at today's most actives. Interesting company profile in that they are investigating cancer at the genomic (DNA) level.They use this information for diagnostic use for individual patients as well. One pipeline diagnostic kit looks at Estrogen positive tumors vs. negative tumors in breast cancers for example. The same is true in men with prostate cancer, which reverts to androgen independent as the disease progresses. Such diagnostic kits would be invaluable to the physician in determining courses of treatment. Pretty cool.