 you know, in our DNA is that somewhat recently, in the last 10 years, a long time before I realized that the mitochondria, which give us all our energy to blink and everything, has its own DNA. It's not like the DNA... I thought every cell in our body had our original type DNA, but the mitochondria is completely different. It has its own DNA. I'd like to know if you have any insights into that. And the second question...