KINE 1020 Lecture Notes - Lecture 53: Cell-Mediated Immunity, Immune System, Antigen
29 Mar 2016
School
Department
Course
Professor
Document Summary
The immune system: two kinds of responses. Both recognize the invader based on the invaders antigen: antigen: a marker on the surface of a foreign substance that the immune system recognizes as non-self that triggers the immune response. Innate immunity: refers to our antigen-nonspecific defense that acts immediately or within hours after exposure. This is the immunity one is born with. Neutrophils and macrophages (recognize a few highly conserved structures present in many different pathogens) Acquired immunity: an antigen-specific defense mechanisms that takes days to become protective and are designed to remove a specific antigen. This is the immunity one develops throughout life. The downside to the specificity of adaptive immunity is that only a few. B-cells and t-cells in the body recognize any one antigen. These few cells then must rapidly proliferate in order to produce enough cells to mount an effective immune response.
