PPT-Antigen An antigen is a substance which when introduced in the body evokes immune response

Types of Antigen Complete Antigen Substances which can induce antibody formation by themselves Haptens substances which are unable to induce antibody formation on its own but can become immunogenic ie capable of inducing antibodies when covalently linked to proteins known as carrier proteins. Group . 3. :. M. . Yusron. . Hasani. . (. 105090100111037. ). A. Muammar . Kadafi. . (115090101111012. ). Nira. . Meirit. a. W.. . . (. 115090100111017. ). Putri. . Indisari. . (. 1150901. What is the Immune System?. Our body’s natural defensive line to foreign material called microbes.. Without an immune system, microbes would quickly attack our bodies.. Our body has three levels of defense against foreign invaders. . Another Example of Cellular Communication. Key attributes of immune system. 4 attributes that characterize the immune system as a whole. specificity. antigen-antibody specificity. diversity. react to millions of antigens. 1. Immunity: Two Intrinsic Defense Systems. Innate. (nonspecific) system responds quickly and consists of:. First line of defense. – skin and mucosa prevent entry of microorganisms. Second line of defense. Non-specific Immunity. Born with some immunity . Helps prevent disease. Helps slow disease progression. First line of defense. Non-specific, cont. .. Physical Barrier- . unbroken skin . Kuby. . Immunology. , . 7e: Chapter 1. A historical perspective of immunology. What is immunity?. Immunity is the state of protection against foreign pathogens or substances (antigens). Latin term . Essential Knowledge. 2.d.2 - Homeostatic mechanisms reflect both common ancestry and divergence due to adaptation to different environments (43.3).. 2.d.3 – Biological systems are affected by disruptions to their dynamic homeostasis (43.2-43.4).. Dr Rehma Dar. Assistant professor Pathology. Introduction to Immune System. Cell mediated vs Humoral Immunity. Hypersensitivity reactions. Autoimmune diseases. Transplant Rejection. Immunodeficiency states. 16. Chapter 21 . Immunity. Resistance to disease. Immune system has two intrinsic systems. Innate (nonspecific) defense system. Adaptive (specific) defense system. Immunity . Innate defense system has two lines of defense. Dr. Suzan Y.. Antigen. :. It s a substance that may be specifically bound by an antibody (. Ab. ) molecule or T cell receptors (TCR). When this binding lead to the activation of B cells or T cells ,this substance is known as . Immune Response. Adaptive Immune. 2. Adaptive or Acquired Immune Response. Protects against infectious agents and abnormal body cells . Amplifies the inflammatory . response. Activates complement. 3. What is the Immune System?. The immune system is a vast network of cells and tissues.. Located throughout your body.. Involves numerous types of cells, organs, proteins, and tissues.. The immune system can distinguish between your tissues and foreign tissue/ invaders.. Assist. Professor . Dr. Sinan Bahjat. M.B.Ch.B., M.Sc., F.I.B.M.S. . Antigens . are . molecules that react with antibodies. , . whereas immunogens . are . molecules . that induce an . immune response. B. Antigen (Ag). A substance that reacts with the products of a specific immune response.. C. Hapten. A substance that is non-immunogenic but which can react with the products of a specific immune response..