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
2017-06-30
33
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 Standford 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://jikaoti.com/ti/e8BfFFFM
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
提到汽车的安全性,很多人会想到沃尔沃;谈到超市,沃尔玛似乎已经成为很多都市消费者的首选。这种现象主要体现了企业的【】
可口可乐公司积极参与希望工程,截至2004年5月,该公司已在中国捐建了52所希望小学、100多个希望书库。中国是潜力巨大的战略性市场,可口可乐选择农村教育作为突破口,专门设立了公益事务部,全力负责公益项目的策划与实施。在公司公益事务部的电脑里,存有捐建的5
根据“恩格尔定律”,随着家庭收人的增加,用于住房及家庭日常支出的费用比重()
Humanbeingsactinadifferentwayfrom【C1】______ofanimalsjustbecausetheycanspeakwhileanimalscannot.【C2】______theclev
IntheUnitedStates,boysandgirlsstartschoolwhentheyarefiveyearsold.Insomestatestheymuststayinschooluntilth
TheGreatFireofLondonstartedintheveryearlyhoursof2September1666.Infourdaysitdestroyedmorethanthree-quarters
Communicationcanbethemostcriticalaspectofwhetherachangestrategywillsucceedorfail.【T1】Thedegreetowhichinformat
Thedifferencesinrelativegrowthofvariousareasofscientificresearchhaveseveralcauses.【T1】Someofthesecausesarecomp
Therearefivebasicfunctionsofanewspaper;toinform,tocomment,topersuade,toinstructand【C1】______Youmaywellthinkt
Wemustmakesurethatwekeep______withnewdevelopmentsincomputertechnology.
随机试题
A、musicB、plasticC、oceanD、publicC
患者女,20岁。多年来一直有乏力、头晕等症状,且月经量过多,曾服用过中药,但症状无改善。近来由于症状加重人院,体检结果:面色苍白,肝肋下2cm,脾肋下2.5cm,Hb83g/L,RBC3.5×1012/L,Het0.27,网织红细胞0.027,血涂血
麝香每日用量冰片每日用量
全子宫加双附件切除术时,不需要切断的韧带是()
【背景资料】某公路跨河桥上部结构为长13m单跨简支预制板梁,下部结构由灌注桩基础、承台和台身构成。施工单位按合同工期编制了如下网络计划图5—3,经监理工程师批准后实施。在施工过程中,发生了以下事件:事件一:在进行1#基础灌注桩施工时,由于施工单位操
统一规定会计科目的编号是为了便于编制会计凭证、登记会计账簿、查阅账目、实行电算化。()
狮舞可以分为北狮和南狮两种。南狮狮头有脸谱化的特点。红脸代表勇猛、霸气。黑脸代表忠义、胜利。()
膳食纤维是()。[湖北省2010年5月三级真题]
•Readtheletterbelowaboutakindofserviceofferedbyacompany.•Inmostofthelines41-52thereisoneextraword.Itis
A、HehelpedDorisbuildupthefurniture.B、Dorishelpedhimarrangethefurniture.C、Dorisfixedupsomeofthebookshelves.D、
最新回复
(
0
)