Keep in mind that BMY once sponsored a combo trial of dendritic cell with PD-1 inhibitor and the trial was terminated without success. I have no medical background. Intuitively I would think the key thing in using dendritic cells lies in how to educate them to recognize cancer cells better. I guess NWBO has unique value in this regard. That's why BMY came to NWBO for collaboration first and then later Merck.