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
30
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
苹果手机推出升级版本属于()
作为成熟期的营销策略,产品改进也称()
简述人口增长对企业营销活动的影响。
资料:某企业本月发生下列经济业务:(1)用银行存款支付行政管理部门的办公费600元。(2)经批准,将盘盈材料900元冲减管理费用。(3)职工王越报销差旅费1800元,现金付讫(出差时未借差旅费)。(4)计提本月行政管理部门使用的固定资产的折旧640
知识产权是权利人就其智力劳动成果而享有的权利,包括______、商标和专利权。
刘某是一个皮货零售商,销售的商品有皮包、皮箱、皮鞋、皮帽、皮服等。刘某建立了一个中国皮货销售网站。但由于皮货零售商比较多,竞争激烈。刘某为了获取竞争优势,决定改为专门销售少数民族需要的皮货。网站也改名为中国少数民族皮货销售网。请回答:该网站属于哪种商
He______hisfirstbooktohismother.
Noonecanfunctionproperlyiftheyare______ofsleep.
IfindstudyingreallydifficultbecauseI’msoeasily______.
轮廓;纲要n.o______
随机试题
A、Smokingandlungcancer.B、Lungcancerandthesexes.C、Howtoquitsmoking.D、Howtopreventlungcancer.B根据录音内容“Foryearsr
耻骨联合平面,相当于
地西泮苯妥英钠
关于环境民事责任的免责,下列哪些选项是错误的?
会计核算上将融资租入的资产视为承租企业的自有固定资产进行核算,贯彻的是实质重于形式的原则。()
(2014年真题)关于编辑策划能力的说法,错误的是()。
简述夏商周三代青铜器的发展过程及各阶段的风格特征。
社会政治经济制度对教育的制约作用表现在()。
诗歌谚语中常常蕴含着生物学知识,下列诗歌谚语与其对应的生物学知识不正确的是()。
HAL隐藏了不同【69】平台的差异性,从而改善了操作系统的可【70】性。
最新回复
(
0
)