首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Scientists have developed a new cancer drug. So far, they have tested it only on 【B1】______ animals. The drug is designed to 【B2
Scientists have developed a new cancer drug. So far, they have tested it only on 【B1】______ animals. The drug is designed to 【B2
admin
2010-01-10
29
问题
Scientists have developed a new cancer drug. So far, they have tested it only on 【B1】______ animals. The drug is designed to 【B2】______ and kill cancer cells but not healthy cells.
First, the drug enters the cancer and destroys the supply of blood. Then it releases 【B3】______ to destroy the cancer cells.
Researchers at the Massachusetts Institute of Technology in Cambridge carried out the study. The 【B4】______ appeared in Nature 【B5】______ . 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 【B6】______ three problems. They had to find a way to destroy the blood vessels, then to 【B7】______ 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 【B8】______ in nanometers, or one thousand millionth of a meter. 【B9】______ .
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.
【B10】______ That cut off the blood supply and trapped the nanocell inside the cancer. Then, the nanocell slowly released chemotherapy drugs to kill the cancer ceils.
【B11】______ .
【B3】
选项
答案
poison
解析
转载请注明原文地址:https://kaotiyun.com/show/XTt7777K
0
大学英语四级
相关试题推荐
ThepassagegivesanoverviewoftheeffectsofglobalwarmingontheUnitedStates.______arethelargestsourceofgreenhous
Duringthe19thcentury,itwascommontohearpeopleinEuropeandAmericasaythatthesourcesoftheseawereS1
A、Theybeginpayingfederaltaxesfromthatday.B、Itisthelastdayforpeopletopaythecitytax.C、Itisthedeadlineforp
Whateffectdoesexcessivepositiveionizationhaveonsomepeople?Byobservingthebehaviorofanimals,scientistsmaybeabl
A、Heprefersamoreexpensivemodel.B、He’sconfusedbytheremotecontrols.C、He’seagertouseit.D、He’snothappythathebo
Fromtheevolutionarypointofview,______.Accordingtothepassage,ifapersonneverforgot,______.
Dogsaresocialanimalsandwithoutpropertraining,theywillbehavelikewildanimals.Theywillspoilyourhouse,destroyyou
Fearisanemotiondevelopedfromlifeexperienceratherthananinbornnatureofhumans.Socialanxietydisorderislikelyto
Fearisanemotiondevelopedfromlifeexperienceratherthananinbornnatureofhumans.Childrenwithseparationanxietymay
A、Commoncausesofanger.B、Judgingpeople’sbehavior.C、Changingpeople’sattitudes.D、Theeffectsofnegativebehavior.BWhat
随机试题
A.主要作用于α受体B.主要作用于β受体C.主要作用于β1受体D.对α和β受体作用都强E.对α和B受体作用都弱肾上腺素()。
4-甲基伞酮用360nm激发光照射,发出什么范围的荧光
儿童第二次生长突增的高峰是在
适宜用清热解毒,软坚散结法治疗的流行性腮腺炎的证候是
根据《建筑地基基础设计规范》(GB50007—2002),确定地基承载力特征值理论公式是()。
风险管理的过程主要包括()以及沟通和记录等。
下列项目中属于土地增值税的纳税人转让房地产取得应税收入的是()。
设A(x1,y1),t),B(x2,y2),C(x3,y3)为平面上不共线的三点,则三角形ABC的面积为()。
()的标志是守恒观念的形成。
下列不属于第一顺序法定继承人的是()。
最新回复
(
0
)