host defense
1.It was reported that CpG DNA can activate plasmacytoid dendritic cells (pDCs) and B cells directly, which express TLR9, and secondarily activate monocytes^nacrophages, NK cells, T cells and some non-immune cells, improve the ability of neutrophils to provide effective host defense, and produce Thl-like proinflammatory cytokines, interferons, and chemokines, to activate host defense mechanisms leading to innate and acquired immune responses.
3.When a brigade task force deploys into the maneuver box, the commander must concern himself with offensive and defensive operations, reconnaissance, fire planning, air defense, nuclear, biological and chemical (NBC) defense and a host of other tactical issues (not forgetting, of course, the infamous NTC sand turtle).
