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.
In a full-size American sedan. Let that sink in. The 2015 Dodge Charger SRT Hellcat is the most powerful production sedan ever built. And with a claimed 204-mph top speed, Chrysler says itâs also the fastest production sedan ever.