首页
登录
职称英语
【B1】 [br] 【B11】 [originaltext] Scientists have developed a new cancer drug. So
【B1】 [br] 【B11】 [originaltext] Scientists have developed a new cancer drug. So
游客
2023-08-01
39
管理
问题
【B1】 [br] 【B11】
Scientists have developed a new cancer drug. So far, they have tested it only on laboratory animals. The drag is designed to invade and kill cancer cells but not healthy ceils.
First, the drag enters the cancer and destroys the supply of blood. Then it releases poison to destroy the cancer cells.
Researchers at the Massachusetts Institute of Technology in Cambridge carried out the study. The results appeared in Nature magazine. A school news release called the drug an "anti-cancer smart bomb."
Ram Sasisekharan is a professor at M.I.T. He says his team had to solve three problems. They had to find a way to destroy the blood vessels, then to prevent the growth of new ones. But they also needed the blood vessels to supply chemicals to destroy the cancer.
So, the researchers designed a two-part "nanocell". The cell is measured in nanometers, or one thousand millionth of a meter.The particle used was two hundred nanometers--much, much smaller than a human hair.
The scientists say it was small enough to pass through the blood vessels of the cancer, but it was too big to enter normal blood vessels. The surface of the nanocells also helped them to avoid natural defenses.
The scientists designed the cell as a balloon inside a balloon. They loaded the outer part with a drug that caused the blood vessels to fall in on themselves. That cut off the blood supply and trapped the nanocell inside the cancer. Then, the nanocell slowly released chemotherapy drags to kill the cancer cells.
The team says the treatment shrank the cancer and avoided healthy cells better than other treatments.
选项
答案
The team says the treatment shrank the cancer and avoided healthy cells better than other treatments.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2886677.html
相关试题推荐
【B1】[br]【B10】[originaltext]It’snevertooearlytosaveyourskin—oryour
【B1】[br]【B8】[originaltext]It’snevertooearlytosaveyourskin—oryour
【B1】[br]【B6】[originaltext]It’snevertooearlytosaveyourskin—oryour
【B1】[br]【B5】[originaltext]It’snevertooearlytosaveyourskin—oryour
【B1】[br]【B4】[originaltext]It’snevertooearlytosaveyourskin—oryour
【B1】[br]【B2】[originaltext]It’snevertooearlytosaveyourskin—oryour
[originaltext]Forallitsbenefits,television’sinfluencehasbeenextreme
[originaltext]M:Okay.MayIseeyourdriver’slicenseplease?W:What?DidId
[originaltext]M:Okay.MayIseeyourdriver’slicenseplease?W:What?DidId
[originaltext]Lionsareopportunists.Theyprefertoeatwithouthavingto
随机试题
Fishareanimalsthatliveinwater.Theyliveinalmostanyplace【11】there
Whichhotelshavethefollowingfacilities?Writethecorrectletter,A,B,C,o
内环境的稳态是指( )A.细胞内液中各种理化因素保持相对恒定的状态 B.细胞
把最重要的概念放在复习的开头,在最后对它们进行总结,这是{}和{
大黄炭的炮制作用是A.泻下作用稍缓,善清上焦血分热毒B.泻下作用缓和,增强活血祛
2020年1-12月份,全市固定资产投资3815.36亿元,同比增长6.1%。房
人力资源管理在薪酬策略上,采用以( )为基础的计酬方法。A.资源 B.用户
我们到一个地方去办事,会事先在头脑中想出可能到达的道路,经过分析与比较,最后选择
女,48岁。右下第一磨牙残冠,邻牙未见松动,建议拔除后义齿修复。拔除时需麻醉哪些
某省新建一水库,其库容为3亿m3,土石坝最大坝高为75m。批复的大坝工程概算为1
最新回复
(
0
)