Dr. Patrick Ling, Queensland University of Technology (image) Queensland University of Technology Share Print E-Mail Caption Dr. Patrick Ling says this is the first time the PSP compound has been proven to have anti-cancer stem cell effects. Credit Erika Fish, QUT. Usage Restrictions Media use only. Share Print E-Mail 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.