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
82
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
直接决定市场的潜在容量的是()
Communicationcanbethemostcriticalaspectofwhetherachangestrategywillsucceedorfail.【T1】Thedegreetowhichinformat
Communicationcanbethemostcriticalaspectofwhetherachangestrategywillsucceedorfail.【T1】Thedegreetowhichinformat
Communicationcanbethemostcriticalaspectofwhetherachangestrategywillsucceedorfail.【T1】Thedegreetowhichinformat
Weshalltake______measureswethinkpropertocopewiththesituation.
轮廓;纲要n.o______
Thetwinslooksoalike,it’sdifficultto______onefromtheother.
Ineducation,thereshouldbeagoodbalanceamongthebranchesofknowledgethatcontribute______effectivethinkingandwisej
cash-flow
凡到过联想集团总部大楼的人也许会知道表述联想精神的四个大字,这四个字一进大厅就可看到——“求实进取”。联想人就要具有脚踏实地的求实精神和奋发向上的进取精神。“求实”精神的体现:不要光说不练的假把式;制定工作规划或方案,不能只考虑应该做什么?更要考虑现有的资
随机试题
下列哪项不是SLE淋巴结肿大的临床表现
检查脊柱的压痛的方法和临床意义正确的是
4周岁小儿的身长应为
在药品零售企业中,需要凭处方方可销售的特殊药品复方制剂除了()。
(2005年)pz波函数角度分布形状为()。
按时间分类,支付可分为()。
根据《个人外汇管理办法》的规定,个人外汇账户按账户性质可划分为()。
若商业银行核心资本距监管当局的要求相差较远,可以采取()的方式来提高资本充足率。
已知A是m×n矩阵,m<n证明:AAT是对称阵,并且AAT正定的充要条件是r(A)=m.
Onwhataspectofweatherforecastingdoestheconversationfocus?
最新回复
(
0
)