active host response的用法和样例：
- The attraction of leukocytes to tissue is essential for the inflammation and host response to infection.This process is controlled by chemokines, which are chemotactic cytokine.
- We used microarray analysis followed by real-time-polymerase chain reaction (RT-PCR) in an RCMV-accelerated TVS rat cardiac transplant model to determine whether CMV activates host WR and AG factors.
- The host then passed around a box of cigars.
- A host of friend meet him at the railroad station.