The team is now testing the molecule on mice affected by diffuse large B-cell lymphomas, to see if the method is effective at killing cancer in living animals. The technique relies on the natural supply of BCL6 and CDK9 in cells, which means it will likely work only on cancerous lymphomas. After testing the new molecule with 859 different types of cancer cells in the lab, the researchers confirmed that it was able to kill only diffuse large cell B-cell lymphoma cells.