下列哪种炎症介质具有化学趋化作用()。
A.组胺
B.缓激肽
C.白细胞三烯
D.C5a
E.活性氧代谢产物
参考答案:C
For many years we have been keeping in ____by sending each other e-mails or phone calls. [ ]
A. connection
B. contrast
C. relation
D. touch
主动脉瓣关闭不全可见()
A.水冲脉
B.交替脉
C.奇脉
D.重搏脉
E.短绌脉