- The word immune literally means “protection.” - Protection from many hazards in the environment. - Diseases cannot be immunized, such as cancer or AIDS - Immune system protects against foreign substances, and problems that may arise during that process - Cells of the immune system function to protect the individual organism against threats from anything that is foreign, or nonself. - Predominant threat to humans is infectious - invasion of the body by foreign organisms, …showed first 75 words of 483 total…

…showed last 75 words of 483 total…antigen - Identical descents are called clones - If your were immunized against the measles, it would take 7 to 14 days to reach maximum antibody levels after the initial exposure to a given antigen. This is the primary immune response - During Primary immune response, many stimulated B cells become long-lived memory cells, retaining the original specific antigen-binding capability - Antibody molecules serve two biological functions. - First they bind to a specific antigen - second