PPT-Immune response to virus

infections Lec 3 The relationship between viruses and the immune system is much more intimate than it is for most bacteria viruses often modify the cells within which they replicate thereby rendering them foreign and susceptible to attack by sensitized lymphocytes furthermore . Zoran . Galic. Ph.D. .. Division of Hematology/Oncology. David Geffen School of Medicine UCLA. zgalic@ucla.edu. August . 11, 2015. In response to pathogens, vertebrate immune systems use two interconnected systems:. The Immune System and HIV Infection. Modified for clickers by. Steven Telleen. San Joaquin Delta College. From a case study by. Annie Prud’homme-Généreux. Life Sciences. Quest University, Canada. IMMUNIZATION. . Introduction. Following an initial encounter with a pathogen, memory immune cells . are established. . . Reexposure. . to that same pathogen . reawakens these . memory cells to control the secondary infection . Immunology. - the study of host defense mechanisms. Immunity. -. ability of the host to protect itself against foreign organisms. Resistance to disease.. Antigen (Ag)- . is a foreign substance that can elicit specific immune response (IR) when is immunogenic. LYMPHOCYTES. Are the key cells of the immune system. Two types: B and T. Both produced in the bone marrow. B matures in the bone marrow. T matures in the thymus. Immunocompetency. B and T lymphocytes must recognize “self.”. Chapter 43. Innate Immunity. nonspecific defense that is active immediately upon infection. found in all animals & plants. includes:. outer covering. skin or shell. chemical secretions. @ openings to interior of body. The Immune System CAMPBELL and REECE Chapter 43 Innate Immunity nonspecific defense that is active immediately upon infection found in all animals & plants includes: outer covering skin or shell chemical secretions 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. The relationship between viruses and the immune system is much more intimate than it is for most bacteria: viruses often modify the cells within which they replicate, thereby rendering them ‘foreign’ and susceptible to attack by sensitized lymphocytes; furthermore, . The Immune System. The immune system is a group of cells & soluble molecules, which interact & distinguish patterns in the body as “self” or “non-self,” in order to eliminate those that are “non-self.”. By: Brittaney Luu. The Innate Immune Response. Symptoms. The Physical Barrier. A . keratin plug . is present in non-lactating women to prevent the entry of bacteria created from the stratified squamous epithelium.. Immunological unresponsiveness to self is referred to as . tolerance. or . self-tolerance. Very important to human health. How is this achieved?. -cells with receptors for self-antigens are destroyed in the thymus or bone marrow (central tolerance). S. Mark Tompkins, PhD. Center for Vaccines and Immunology. Department of Infectious Diseases. March 20, 2017. 1. Linda M. . Stannard. , University of Cape Town. Influenza viruses. 2. Influenza A virus. Adaptive . Non-adaptive (. cell injury-----cell death). hypertrophy. Dysplasia. hyperplasia. neoplasia. Atrophy. Degeneration. Metaplasia. Necrosis, apoptosis. & gangrene. Reversible. Reversible* / Irreversible.