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.
About Toyota Tacoma Double Cab. The Toyota Tacoma continues to be the best-selling midsize truck in the U.S. by a wide margin, thanks to a decades-long reputation as a capable and reliable truck that's as tough as nails. However, strong competitors like the Chevrolet Colorado and GMC Canyon have begun to eat into that dominance.