- The Difference between Intact and Damaged Telomeres, 2000. In collaboration with Agata Smorgorzewska and Titia de Lange, Rockefeller Institute.
- The Difference between Unhealthy and Healthy Human Lymphocytes, 2000. In collaboration with Kunio Nagashima and Michelle Gignac, National Cancer Institute.
- The Difference between Positive and Negative Thought, 2000, Gas Discharge Visualization Camera images
- The Difference between Love and Anger, 2000, Gas Discharge Visualization Camera images