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
67
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
Completethenotesbelow.WriteONEWORDONLYforeachanswer.DevelopmentStudi
Thelegallimitfordrivingafterdrinkingis80milligramsofalcohol(酒精)in
Aroundtheworldmoreandmorepeoplearetakingpartindangeroussportsan
A:Goodmorning!_____56_____? B:Yes,may
商业银行在经营过程中会面临各种风险,其中,由于借款人不能按时归还贷款人的本息而使
过程能力的高低可用过程数据的()来衡量。A.平均值 B.极差 C.标准差
《生产安全事故报告和调查处理条例》规定,(),对主要负责人、直接负责的主管
在一腹膜炎患者腹腔引流液中分离出阴沟肠杆菌,药敏试验对头孢他啶敏感,用头孢他啶治
原告张三根据借款合同起诉被告李四要求归还借款10000元,被告李四提出如下主张构
关于电动机送电试运行的要求,错误的是( )。A.电动机的空载试运行时间宜为2h
最新回复
(
0
)