BAIER: Now, does Secretary Clinton factor into this? SCHWEIZER: For that deal to go through, it needs federal government approval and one of those people that has to approve that deal is Secretary of State Hillary Clinton.
An antigen is any foreign substance which invades the body of an organism, while a pathogen is a living antigen (such as viruses or bacteria) which invade an organism. Many different kinds of white blood cells exist which are able to help the body fight foreign invaders in various ways.
Macrophages are a type of white blood cells that engulf foreign material. They are key players in the immune response to foreign invaders, such as infectious microorganisms Macrophages also release substances that stimulate other cells of the immune system.This information is based on source information from the National Institute of Neurological Disorders and Stroke.hey are key players in the immune response to foreign invaders, such as infectious microorganisms Macrophages also release substances that stimulate other cells of the immune system. This information is based on source information from the National Institute of Neurological Disorders and Stroke.