The J. Craig Venter Institute, Rockville, MD 20850, USA.|The J. Craig Venter Institute, Rockville, MD 20850, USA.|The J. Craig Venter Institute, Rockville, MD 20850, USA.|The J. Craig Venter Institute, Rockville, MD 20850, USA.|The J. Craig Venter Institute, Rockville, MD 20850, USA.|The J. Craig Venter Institute, Rockville, MD 20850, USA.|The J. Craig Venter Institute, Rockville, MD 20850, USA.