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
50
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
Howmanyofuswouldtempforthreeyearswhilewewaitedfortheperfectjo
"Wheredoyoucomeinyourfamily?"AccordingtoFrankSulloway,aUSsocio
(2019年真题)甲单位为一家中央级事业单位,自2019年1月1日起执行政府会计
一般骨髓象检查计数()有核细胞A.400 B.300 C.200
学龄期儿童常见的心理行为问题是A.违拗 B.自杀 C.遗尿 D.咬指甲
基金销售人员从事销售活动的禁止情形包括()。A.征得投资者的同意后推介基
不随建设过程中的变化而变化,只表示子系统相互关系的那种界面称为()。A:动界面
以下各选项中,我国风电发电量年均增速最高的是:A.2014—2016年
(2016真题)根据《地铁设计规范》GB50157-2013,下列关于地铁车站排
首席风险官在履行职务时,不得()。A.对期货公司经营管理中存在的违法违规行
最新回复
(
0
)