题目内容
naïVeTcell是
2021-09-22
A.已初次接触过Ag的成熟T细胞
B.未接触过Ag的成熟T细胞
C.已初次接触过Ag的未成熟T细胞
D.未接触过Ag的未成熟T细胞
E.尚未离开胸腺的T细胞
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