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【单选题】
利用基因工程方法解决免疫排斥的方法有（）
①导入某种调节因子以抑制供体器官细胞抗原决定基因的表达；
②导入某种调节因子以抑制器官受体抗体合成基因的表达；
③除去抗原决定基因再结合克隆技术，培育出没有排斥反应的器官；
④给患者服用某种抑制免疫功能的药物
A.
①②
B.
①③
C.
②③
D.
②④
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举一反三
【单选题】基因工程是 DNA 分子水平的操作,下列有关基因工程的叙述中,错误的是 ___ ___ 。
A.
限制酶只用于切割获取目的基因
B.
载体与目的基因必须用同一种限制酶处理
C.
基因工程所用的工具酶有限制酶， DNA 连接酶等
D.
带有目的基因的载体是否进入受体细胞需检测
【单选题】The immune system is equal in complexity to the combined intricacies of the brain and nervous system. The success of the immune system in defending the body relies on a dynamic regulatory communicatio...
A.
the ages of the twins’’ tissues are exactly alike.
B.
the twins’’ tissues bear the same self-markers.
C.
the father and daughter are different in sex.
D.
the twins’’ molecules possess identical memory.
【单选题】The immune system is equal in complexity to the combined intricacies of the brain and nervous system. The success of the immune system in defending the body relies on a dynamic regulatory communicatio...
A.
recognize and reject all alien molecules that enter the body.
B.
remove all the substances that invade the body organisms.
C.
defend the body from attacks of different viruses or bacteria.
D.
identify and specify all non-self molecules it encounters.
【多选题】有关抗原决定基描述错误的是
A.
与抗原特异性有关
B.
并非所有的决定基都能激发免疫应答
C.
能与所有T细胞TCR结合
D.
一个抗原分子上仅有一个决定基
E.
可T或B被细胞识别
相关题目：
【单选题】基因工程是 DNA 分子水平的操作,下列有关基因工程的叙述中,错误的是 ___ ___ 。
A.
限制酶只用于切割获取目的基因
B.
载体与目的基因必须用同一种限制酶处理
C.
基因工程所用的工具酶有限制酶， DNA 连接酶等
D.
带有目的基因的载体是否进入受体细胞需检测
【单选题】The immune system is equal in complexity to the combined intricacies of the brain and nervous system. The success of the immune system in defending the body relies on a dynamic regulatory communicatio...
A.
the ages of the twins’’ tissues are exactly alike.
B.
the twins’’ tissues bear the same self-markers.
C.
the father and daughter are different in sex.
D.
the twins’’ molecules possess identical memory.
【单选题】The immune system is equal in complexity to the combined intricacies of the brain and nervous system. The success of the immune system in defending the body relies on a dynamic regulatory communicatio...
A.
recognize and reject all alien molecules that enter the body.
B.
remove all the substances that invade the body organisms.
C.
defend the body from attacks of different viruses or bacteria.
D.
identify and specify all non-self molecules it encounters.
【多选题】有关抗原决定基描述错误的是
A.
与抗原特异性有关
B.
并非所有的决定基都能激发免疫应答
C.
能与所有T细胞TCR结合
D.
一个抗原分子上仅有一个决定基
E.
可T或B被细胞识别
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