Opioids are drugs that act on the nervous system to relieve pain. Continued use and abuse can lead to physical dependence and withdrawal symptoms. They come in tablets, capsules or liquid. Some of the well-known brand and street names:
The alternate logo of the AHL. The American Hockey League (AHL) is a 30-team professional ice hockey league based in the United States and Canada that serves as the primary developmental league for the National Hockey League (NHL).
1 MALT is a collection of immune cells that stands guard just beneath outer surfaces of the body to defend against invasive pathogens. 2  The spleen is a highly organized collection of red blood cells, B cells and T cells. 3  B and T cells can be activated and released by the spleen to fight infection.