【单选题】【消耗次数：1】
关于造血祖细胞下述哪项是正确的
①
具有多项分化能力
②
CD34+ CD38
③
-CD34+ Lin
④
-分化能力较局限
参考答案：
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相关题目
【多选题】
关于 CD8+T 细胞介导的细胞免疫，下列哪些是正确的?
①
可因接触非特异性抗原而活化
②
CD3 传递第一信号
③
协同刺激信号为第二信号
④
静息状态的 Tc 即可杀伤靶细胞
⑤
杀伤靶细胞的范围比NK 细胞大
【简答题】
造血祖细胞
【单选题】
CD8+T细胞杀伤靶细胞
①
要识别MHCⅠ类分子上的肽类
②
需要替代途径活化补体
③
要识别MHC Ⅱ类分子上的肽类
④
通过Fc受体与包被了抗体的靶细胞结合
⑤
一个CD8+T细胞只杀伤一个靶细胞
【单选题】
关于小细胞未分化癌的叙述，下列哪项不正确
①
恶性程度最高，早期远处转移
②
多为中心型，，与吸烟关系密切
③
易产生副癌综合征
④
对化疗与放疗敏感
⑤
痰检癌细胞阳性率低
【多选题】
血细胞分化是指
①
分化过程是不可逆的
②
分裂后产生新的子细胞在生物学性状上产生了新的特点
③
通过特定基因的表达合成了特定的蛋白质
④
血细胞失去某些潜能，转变为具有新功能细胞的过程
【简答题】
细胞分化
随机题目
【单选题】
The old man returning home after eight years absence to find that all the neighbors he had known were no longer there. Is this a complete sentence?
①
Yes
②
No
【单选题】
Which sentence is correct?
①
Returning home from work, he saw supper waiting for him in the kitchen.
②
Returning home after work, supper was waiting for him in the kitchen.
【单选题】
A number of foreign scholars [] invited to contribute articles to the magazine.
①
is
②
are
【单选题】
The man was forced to steal a loaf of bread who was hungry. Find any misplaced modifier in the sentence.
①
The
②
a loaf of
③
who was hungry
【单选题】
Pop music is such an important part of society [] it has even influenced our language.
①
as
②
that
③
which
④
where
【单选题】
The companies are working together to create [] they hope will be the best means of transport in the 21st century.
①
which
②
that
③
what
④
who
【单选题】
To succeed in our future goal, [] we students really need to do is to study as hard as possible.
①
that
②
how
③
what
④
why
【单选题】
The drivers are told to drive carefully on the radio. Find any misplaced modifier in the sentence.
①
on the radio
②
the
③
carefully
【单选题】
The trees stand nearly barren; their leaves lay on the ground. Identify the mistake in the sentence.
①
stand
②
barren
③
leaves
④
lay