Edward K Lobenhofer1
, J Todd Auman2,11
, Pamela E Blackshear3
, Gary A Boorman4
, Pierre R Bushel5
, Michael L Cunningham4
, Jennifer M Fostel6,7
, Kevin Gerrish2
, Alexandra N Heinloth2
, Richard D Irwin4
, David E Malarkey8
, B Alex Merrick7
, Stella O Sieber2
, Charles J Tucker2
, Sandra M Ward8
, Ralph E Wilson8
, Patrick Hurban1
, Raymond W Tennant* 9
and Richard S Paules* 10 
1Cogenics, a Division of Clinical Data, Inc., Morrisville, NC 27560, USA
2NIEHS Microarray Group, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
3Integrated Laboratory Systems, Inc., Research Triangle Park, NC 27709, USA
4National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
5Biostatistics Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
6National Center for Toxicogenomics, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
7Laboratory of Respiratory Biology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
8Laboratory of Experimental Pathology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
9Cancer Biology Group, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
10Environmental Stress and Cancer Group, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709
11Current address: Institute for Pharmacogenomics and Individualized Therapy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA