问题
单项选择题
某一细胞因子在淋巴细胞识别Ag时作为第二信使，使T细胞活化成为效应细胞参与免疫应答，该细胞因子是（）
A.IL-1
B.IL-2
C.IL-4
D.IL-10
E.IL-12
答案
参考答案：B
解析：IL-2又名T细胞生长因子，由活化的T细胞产生，其功能为促进淋巴细胞增生与活化。
搜题请搜索小程序“爱下问搜题”
某一细胞因子在淋巴细胞识别Ag时作为第二信使，使T细胞活化成为效应细胞参与免疫应答，该细胞因子是（）
A.IL-1
B.IL-2
C.IL-4
D.IL-10
E.IL-12
参考答案：B
解析：IL-2又名T细胞生长因子，由活化的T细胞产生，其功能为促进淋巴细胞增生与活化。
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| One day, a Chinese student goes to study English in England. His family name is Sun. It is the 1 as the word "sun." England is a country with 2 . It is often cloudy or misty (多雾的), and it 3 again, so the days there 4 get much sunshine (阳光) all the year. When the Chinese student gets to London, a tall 5 policeman with a long face 6 his passport (护照) to check (检查) it. The policeman finds the Chinese name"sun" in the passport. He 7 it is pronounced (发音) just like the 8 word"sun". So he says to the Chinese student,"I see your name is Sun, we like you here. You bring sunshine 9 England, so we don't want you to 10 ." They smile. | ||||
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