对中性粒细胞有趋化作用的是()
A.IL-1
B.IL-2
C.IL-8
D.IL-5
E.IL-6
参考答案:C
Which of the following is not a design feature of human language?()
A.Arbitrariness
B.Displacement
C.Duality
D.Meaningfulness
还原染料的化学结构分为哪两类?