Cardamonin and breast cancer (IMAGE) Experimental Biology Caption The production of PD-LI helps breast cancer cells escape the immune system, but cardamonin may block this process by inhibiting PD-L1 expression, leading to tumor cell death. Credit Patricia Mendonca, Florida A&M University Usage Restrictions Credit must be given to the creator. License CC BY 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.