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
自考
The transplantation of functioning human immune systems into mice was reported by two California research teams in September 198
The transplantation of functioning human immune systems into mice was reported by two California research teams in September 198
admin
2022-08-24
75
问题
The transplantation of functioning human immune systems into mice was reported by two California research teams in September 1988. The mice should have many important uses in medical science such as enabling researchers to test treatments against a number of diseases and to study the effects of infectious microorganisms—including the AIDS virus—on the human immune system. Both research groups at the Medical Biology Institute in La Jolla and at Stand ford University— started with a special strain of mice that are without an immune system. The La Jolla scientists injected the mice with human B cells and T cells, white blood cells that are major components of the immune system. The cells reproduced in the mice’s bodies and migrated throughout the animals’ circulatory systems. The Stanford researchers implanted human fetal liver tissues, thymus gland tissues, and lymph nodes, into the mice. In the mice’s bodies, the liver cells produced stem cells, which develop into the various kinds of blood cells. The implanted tissues converted the stem cells into B cells and T cells. The mice with immune system transplants by both research teams were fully protected against infectious disease. Ordinarily, mice of the strain used by the scientists die soon after birth unless they are kept in a sterile(无菌的)environment.
The two researchers were similar in that both research groups______.
选项
A、had the same objective to their researches
B、used the same procedures in their researches
C、injected the same kind of blood cells into the mice
D、used the same experimental instrument in their work
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/kDPR777K
本试题收录于:
电子商务英语题库经管类分类
0
电子商务英语
经管类
相关试题推荐
近几年航空公司不断降低票价,一个重要原因就是高速公路的不断发展分散了其客源。对于航空公司来说,汽车客运公司是()
【】是衡量一个国家经济实力与购买力的重要指标。
Koalaslookliketeddybears,【C1】______theyarenotbearsatall.Theyarereallyanimalscalledmarsupials.Theseanimalsc
He______hisfirstbooktohismother.
Humanbeingsactinadifferentwayfrom【C1】______ofanimalsjustbecausetheycanspeakwhileanimalscannot.Eventhecleveres
Alandfreefromdestruction(破坏),pluswealth,naturalresources,andlaborsupply—allthesewereimportant【C1】______inhelping
Itisalsotruethattheeffectofadrugismuch______uponyoungstersthanadults.
TheknowledgeandpoweroftheInformationAgewillbewithinreachnotjustofthefew,______ofeveryclassroom,everylibrary
Robotsdifferfromautomaticmachinesin______aftercompletionofonespecifictask,theycanbereprogrammedtodoanotherone
Wewerehavingsuchagoodtimethatwedecideto______ourstaybyanotherweek.
随机试题
()用于结束当前系统状态并自动开始新一次的系统启动。
Mrs.Lincolnhas______thatsheisunabletogetajob.
女性,48岁,发现右乳内上象限肿物1周。检查:局部可及2cm大小肿物,表面皮肤凹陷,肿物质硬,表面不光滑,活动。右腋下可及1cm大淋巴结,质较硬,既往患者有肺结核病史。
(2019年)希腊甲公司与中国乙公司签订许可协议,授权其在亚洲地区独占使用其某项发明专利。许可期限十年标的额3.68亿元,协议选择中国最高院国际商事法庭管辖。协议履行到第5年。因希腊甲公司又给予荷兰乙公司同样的独占许可,中国乙公司向国际商事法庭起诉希腊甲公
在真空中波长为λ的单色光,在折射率为n的透明介质中,从A点传播到B点,若A、B两点相位差为π,则此路经AB的光程为()。
城镇道路分类方法有多种形式,无论如何分类,主要是满足道路的()功能。
侗族正月出访外寨之间的芦笙比赛叫()。
有数据定义语句:DimX,YAsInteger以上语句表明
ConsideringhowjazzistranscribedinChinese(jueshi),youmaybe【C1】______intoassumingthatitisanaristocraticcultural
(1)Moderatedrinkingreducesstrokerisk,studyconfirms.Similartothewayadrinkortwoadayprotectsagainstheartattacks
最新回复
(
0
)