Dr. Michele Ardolino (IMAGE) The Ottawa Hospital Caption Dr. Michele Ardolino and his team discovered that a kind of kiss between cells, called trogocytosis, plays a key role in the battle between the immune system and blood cancer cells. Credit The Ottawa Hospital Usage Restrictions For use only with stories about this research License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.