Natural killer cells are a part of the lymphoid linage of white blood cells. The body responds to viruses by secreting cytokines that disrupt viral replication and make the cell more susceptible to attack by NK cells. The primary cytokine released by NK cells is type II interferon, which activates macrophages.
The best built American truck is the Ford F-350. It's got the most powerful powertrain, the strongest frame, the best body for corrosion protection, and it comes with a 5 year â¦ /100,000 mile warranty on all engines.
Project Spotlight: Coyote 5.0-Powered Ford Ranger Pickup. The Ford F-150, Americaâs best-selling truck three decades running, is also among the most modified truck in America. During the 1990âs, Ford produced a special high performance model called the Lightning, with a 5.8 liter High Output V8. The Lightning came and wentâ¦ and came back again, along with a little cousin of a concept, the Ford Ranger Lightning Bolt.