 Is there a way that I can tell the cancer cell is going to be sensitive to this treatment? And I would guess that it requires you to have the cancer cell. Number one, is that true? And number two, I believe there's a physics angle to it, right? A little like basically saying that something must change that can change the qualities of cancer and you looked at density. Well, we looked at mass. Mass, forgive me. Wait, simply the weight of the cell. Yeah. And so what was discovered at MIT and Dana-Farber was that if you take live cancer cells out of a patient and we do have to have live cells and you apply an effective cancer drug to those live cells, they change their weight by a tiny amount. I mean really, really minuscule very quickly. And then four or five days later, the drug will actually kill the cell. But in a few hours, we can tell if the drug is going to kill the cell four or five days later or not. And by using that really sensitive measurement that would happen so quickly, we could build a two-day turnaround cancer therapy guidance test that predicts which cancer drugs are going to work for which cancer patients.