20xxted英語演講23致死的癌癥是完全可以治愈的-文庫吧資料
2025-01-16 23:10本頁面
【正文】 orchestra of chemical signals that tumors need to make to spread. For a tumor to break out of the tissue that itamp。
So in this image,the smaller, hundrednanometer, blue nanoparticles are leaking out, and the larger, 500nanometer, red nanoparticles are stuck in the bloodstream. So that means as an engineer, depending on how big or small I make a material, I can change where it goes in your body.
在這張圖中，較小的百納米尺寸的 藍(lán)色納米顆粒正在滲漏至血管外，大一點的500納米的紅色顆粒 被困在了血管中。事實證明有許多腫瘤的血管是有漏洞的，所以納米顆粒 可以從血流滲漏到腫瘤中。包裹著血管的就是腫瘤。re going to inject nanoparticles into the blood vessel and watch how they travel from the bloodstream into the tumor. Now it turns out that the blood vessels of many tumors are leaky, and so nanoparticles can leak out from the bloodstream into the tumor. Whether they leak out depends on their size.
下面我來解釋一下。
So let me show you what I mean. This is a blood vessel in the body. Surrounding the blood vessel is a amp。re going to use to make a better cancer detector.
作為一位醫(yī)生，讓我感興趣的不僅僅是材料的顏色 在納米尺寸會改變，它們在人體內(nèi)運動的方式也將改變。 the way they travel in your body also changes. And this is the kind of observation that weamp。39。39。這太瘋狂了! 你可以想象宏觀世界有這種材料么?這就像你衣櫥里所有的棉質(zhì)牛仔褲 依據(jù)尺寸不同，顏色也會不一樣。39。 如果你用這種材料做成納米結(jié)晶，然后把它放入液體中，用光照一下，它們就會發(fā)光。如果你拿一個比較稀有的材料比如硒化鎘。
It turns out that materials actually change their properties at the nanoscale. You take a mon material like gold, and you grind it into dust, into gold nanoparticles, and it changes from looking gold to looking red. If you take a more exotic material like cadmium selenide forms a big, black crystal if you make nanocrystals out of this material and you put it in a liquid, and you shine light on it, they glow.
實際上在納米級別尺寸的時候，材料的性質(zhì)會發(fā)生改變。也就是100納米。但是實際上，運用納米技術(shù)就能實現(xiàn)。但是我之前提到了電腦改變了我們的生活，它們小到我們可以隨身攜帶。作為工程師，我們認(rèn)為這個就是直接微型化。39。這意味著他們可以集診斷和實施治療于一車，每個病人都不會錯過跟蹤治療。t afford the trip. With the integrated microscope and puter analysis, Rebecca and her colleagues have been able to create a vanthat has both a diagnostic setup and a treatment setup. And what that means is that they can do a diagnosisand perform therapy on the spot, so no one is lost to follow up.
有一半的人不會出現(xiàn)，因為她們無法支付路費。t turn up because they canamp。
Fully half of them donamp。39。并且，不用要求一個專業(yè)領(lǐng)域的人來觀察這個圖像，你直接可以訓(xùn)練電腦去比對正常和癌變的細(xì)胞。
What she and her team have done is miniaturize that whole microscope into this $10 part, and it fits on the end of an optical fiber. Now what that means is instead of taking a sample from a pat
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