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
医学
For several years, scientists have been testing a substance called interferon(干扰素), a potential wonder drug that is proving to b
For several years, scientists have been testing a substance called interferon(干扰素), a potential wonder drug that is proving to b
admin
2013-11-30
22
问题
For several years, scientists have been testing a substance called interferon(干扰素), a potential wonder drug that is proving to be effective in treating a variety of ailments, including virus infections, bacteria infections, and tumors. To date, the new drug has provoked no negative reaction of sufficient significance to discourage its use. But in spite of its success, last year only one gram was produced in the entire world.
The reason for the scarcity lies in the structure of interferon. A species of specific protein, the interferon produced from one animal species cannot be used in treating another animal species. In other words, to treat human beings, only interferon produced by human beings may be used. The drug is produced by infecting white blood cells with a virus. Fortunately, it is so powerful that the amount given each patient per injection is very small.
Unlike antibiotics, interferon does not attack germs directly. Instead, it makes unaffected cells resistant to infection, and prevents the multiplication of viruses within cells.
As you might conclude, one of the most dramatic uses of interferon has been in the treatment of cancer. Dr. Hans Strander, research physician at Sweden’ s famous Karolinska Institute, has treated more than one hundred cancer patients with the new drug. Among a group of selected patients who has undergone surgical procedures for advanced cancer, half were given interferon. The survival rate over a three-year period was 70 percent among those who were treated with interferon as compared with only 10 to 30 percent among those who have received the conventional treatments.
In the United States, a large-scale project supported by the American Cancer Society is now underway. If the experiment is successful, interferon could become one of the greatest medical discoveries of our time.
Interferon is produced by______.
选项
A、infecting viruses, bacteria, and tumors with a drug
B、infecting proteins with a virus
C、infecting white blood cells with a virus
D、infecting viruses with proteins
答案
C
解析
文中第二段,作者明确指出The drug is produced by infecting white blood cells with a vi-rus,选项C正确。
转载请注明原文地址:https://jikaoti.com/ti/vdNDFFFM
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
下面哪一项不符合干扰素治疗乙肝炎的指征
Severalclassesofbittercitruscompoundhavelookedpromisingasanticanceragentsinlaboratorytests.Anewstudyindicates
Cultureshockmightbecalledanoccupationaldiseaseofpeoplewhohavebeensuddenlytransplantedabroad.Likemostailments,
Cultureshockmightbecalledanoccupationaldiseaseofpeoplewhohavebeensuddenlytransplantedabroad.Likemostailments,
A、It’soverrated.B、It’sratherboring.C、It’shardtounderstand.D、It’sextremelyinteresting.D女士表示自己从未看过这样有趣的科幻故事,男士讲女士这
Itisanaturalmarvel.Allofthelifeoftheearthdies,allthetime,inthesamevolumeasthenewlifethatdazzlesuseach
A、Sheworkedasskiingcoach.B、Shewasacollegeinstructor.C、Shewasasocialworkerintheclinic.D、Sheworkedaselementar
Youarewhatyoueatnotwithstanding,itisonlyrecentlythatmostconsumershavebecomeinterestedinthetechnicaldetailsof
Youarewhatyoueatnotwithstanding,itisonlyrecentlythatmostconsumershavebecomeinterestedinthetechnicaldetailsof
随机试题
捣烂外敷治疗鸡眼的药物是
在一般投资项目中,当一项投资方案的净现值大于零时。即表明()。
A.烧伤患者出现黑便B.剧烈恶心、呕吐后出现呕血、黑便C.因腰痛自服芬必得后出现黑便D.肝硬化患者用力解大便后出现呕血、黑便急性胃黏膜病变的出血是
配对设计资料的符号秩和检验中,其无效假设为
关于胎儿电子监护,提示胎儿缺氧的是
肠易激综合征的症状特点是
根据企业所得税法律制度的规定,下列关于不同方式下销售商品收入金额确定的表述中,正确的是()。
根据民事诉讼法及相关规定,下列关于民事诉讼第三人的说法哪些是正确的?
投射指把自己思想、态度、愿望、情绪或特征等,不自觉地反应于外界的事物或他人的一种心理作用。下列不属于投射的是:
Thewearableantennasmayhavepotentialapplicationinmanyareas.Accordingtothespeaker,whichofthefollowingisNOTone
最新回复
(
0
)