首页
登录
职称英语
【B1】 [br] 【B6】 [originaltext] Scientists have developed a new cancer drug. So
【B1】 [br] 【B6】 [originaltext] Scientists have developed a new cancer drug. So
游客
2024-03-03
35
管理
问题
【B1】 [br] 【B6】
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
solve
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3502932.html
相关试题推荐
[originaltext]InFebruarylastyear,mywifelostherjob.Justassuddenly
[originaltext]InFebruarylastyear,mywifelostherjob.Justassuddenly
[originaltext]Time!Ithinkalotabouttime.Andnotjustbecauseit’sthe
[originaltext]Time!Ithinkalotabouttime.Andnotjustbecauseit’sthe
[originaltext]M:MissJones,couldyoutellmemoreaboutyourfirstjobwithh
[originaltext]Whencouplesgetmarried,theyusuallyplantohavechildren.
[originaltext]Whencouplesgetmarried,theyusuallyplantohavechildren.
[originaltext]Obtaininggoodhealthinsuranceisarealnecessitywhileyou
[originaltext]Obtaininggoodhealthinsuranceisarealnecessitywhileyou
[originaltext]KatherineGramgraduatedfromtheUniversityofChicagoin19
随机试题
Forthispart,youareallowed30minutestouniteashortessay.Youshould
TheshortcomingsofMr.Brooks’analysisare______his______inexplainingfina
[originaltext]W:Themountainseemstohavegrown,Ifeelsodiz2ywhenIclimb
[originaltext]Americanschoolchildrenoftenwearuniformsiftheyattendrel
健康管理的伦理规范中,以下不是健康管理提供者与服务对象应共同遵守的规范有()。A
设施技术状态为2类及状况值评定为1的分项设施()。A:正常使用,正常养护 B
与女子胞关系密切的经脉有A.任脉 B.督脉 C.冲脉 D.带脉
在经济学中,充分就业并不等于社会劳动力100%就业,通常将()排除在
下列关于公司长期投资和长期筹资表述正确的有()。A.经营性资产投资和金融性
3~llOkV屋外配电装置的安全净距中,A值的适用范围为()。A.不同相的带电
最新回复
(
0
)