Document 5LqgD7o6QrJ76g6a8LdnMnbw4

1 .take us to the microscopic level so that we can see Page 716 2 the cells that interact with asbestos fibers when you 3 take a breath. 4 In order to do that, we use an electron 5 microscope. And if I took a piece of the lung out of 6 this here or the top of the lung right here and I put 7 it in an electron microscope as we see here, and this 8 is an electron microscope, and we put the sample in 9 this chamber right here an electron beam comes down 10 and illuminates the sample and it shows up on this 11 screen here in front of me and then I can take a 12 picture of it over here and keep a permanent image of 13 what we see. 14 For example, if I want you to see what this 15 lung actually looks like in a human, rat, or mouse, 16 and, in fact, I am going to go back and forth between 17 human tissues, rat tissues, mouse tissues because they 18 all look the same at this level. 19 Mouse lungs are a lot smaller than human 20 lungs, but the cells are exactly the same and all 21 designed for the same purposes, and that is to