Medical Technology 2003 Dr
... The body has two types of response to invasion by a pathogen: 1- The innate immune response ( natural or non-specific) 2- The adaptive immune response (acquired- Specific). The Natural Immunity is the first immunological non specific barrier ...
... The body has two types of response to invasion by a pathogen: 1- The innate immune response ( natural or non-specific) 2- The adaptive immune response (acquired- Specific). The Natural Immunity is the first immunological non specific barrier ...
No Slide Title
... B-cells: •Produce antibodies and can present antigens. •Are identified by the markers CD19 and CD20. T-cells: •Cytotoxic T cells kill infected cells. •Are identified by the surface marker CD8. •Helper T cells (Th) provide “help” for Cytotoxic T cells and B cells. •Are identified by the surface marke ...
... B-cells: •Produce antibodies and can present antigens. •Are identified by the markers CD19 and CD20. T-cells: •Cytotoxic T cells kill infected cells. •Are identified by the surface marker CD8. •Helper T cells (Th) provide “help” for Cytotoxic T cells and B cells. •Are identified by the surface marke ...
cells - Pomp
... • 4. some proliferated cells develop into long lived memory cells that can respond rapidly upon exposure of the same antigen ...
... • 4. some proliferated cells develop into long lived memory cells that can respond rapidly upon exposure of the same antigen ...
Innate immunity - Fadel Muhammad Garishah, MD
... cellular and biochemical defense mechanisms that are in place. • The principal components of innate immunity are – (1) physical and chemical barriers, such as epithelia and antimicrobial substances produced at epithelial surfaces; – (2) phagocytic cells (neutrophils, macrophages) and NK (natural kil ...
... cellular and biochemical defense mechanisms that are in place. • The principal components of innate immunity are – (1) physical and chemical barriers, such as epithelia and antimicrobial substances produced at epithelial surfaces; – (2) phagocytic cells (neutrophils, macrophages) and NK (natural kil ...
Unit #6 Outline
... A disease spread from one living thing to another or through the environment A. Causes-Pathogen- an organism that causes disease Infection- occurs when a pathogen enters the body, multiplies and damages body cells 1. Viruses- pieces of genetic material surrounded by a protein coat a. need living cel ...
... A disease spread from one living thing to another or through the environment A. Causes-Pathogen- an organism that causes disease Infection- occurs when a pathogen enters the body, multiplies and damages body cells 1. Viruses- pieces of genetic material surrounded by a protein coat a. need living cel ...
Host Microbe Interations
... subunit binds to specific receptors on target cell. 2- Super-antigens interfere with T cell responses by causing non-specific activation of T cells. This leads to a massive release of cytokines that can promote tissue damage. ...
... subunit binds to specific receptors on target cell. 2- Super-antigens interfere with T cell responses by causing non-specific activation of T cells. This leads to a massive release of cytokines that can promote tissue damage. ...
Immunopathology
... • Autoreactive CTL cannot lyse b-cells without upregulation of MHC-I expression • Interferon- (and other inflammatory cytokines) increase MHC-I • Beta cell destruction and IDDM required additional direct effect of interferon- from infiltrating CD4 and CD8 cells ...
... • Autoreactive CTL cannot lyse b-cells without upregulation of MHC-I expression • Interferon- (and other inflammatory cytokines) increase MHC-I • Beta cell destruction and IDDM required additional direct effect of interferon- from infiltrating CD4 and CD8 cells ...
antigen
... Acute Inflammation • Nonspecific response to foreign invasion, tissue damage, or both • Destroys invaders, removes debris, and prepares area for healing ...
... Acute Inflammation • Nonspecific response to foreign invasion, tissue damage, or both • Destroys invaders, removes debris, and prepares area for healing ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
... a) carbohydrate b) lipid c) protein d) nucleic acid II. State whether the following are True or False; state reason 6. CD 45 is a signal transduction molecule found on B lymphocytes. 7. Dendritic cell is not an example of professional antigen presenting cell. 8. Apoptosis is a physiological phenomen ...
... a) carbohydrate b) lipid c) protein d) nucleic acid II. State whether the following are True or False; state reason 6. CD 45 is a signal transduction molecule found on B lymphocytes. 7. Dendritic cell is not an example of professional antigen presenting cell. 8. Apoptosis is a physiological phenomen ...
When the castle walls have been breached: The Immune System
... Vaccines DO get your body to produce the antibodies for the pathogen so if you do get sick, you can fight it off easily! ...
... Vaccines DO get your body to produce the antibodies for the pathogen so if you do get sick, you can fight it off easily! ...
A Breakthrough in Understanding the Immune System Researchers
... when the body elicits an immune response) to protect the body from infection and foreign substances. which the large or small intestine becomes irritated and/or infected. ...
... when the body elicits an immune response) to protect the body from infection and foreign substances. which the large or small intestine becomes irritated and/or infected. ...
bac_vir_imm_study_guide_
... What is conjugation? What gets exchanged during conjugation? What advantage does it provide? What are endospores? What is their use to bacteria? Explain how sterile technique is used in the lab when growing bacteria. If a Petri dish is streaked for isolation and paper discs containing chemicals are ...
... What is conjugation? What gets exchanged during conjugation? What advantage does it provide? What are endospores? What is their use to bacteria? Explain how sterile technique is used in the lab when growing bacteria. If a Petri dish is streaked for isolation and paper discs containing chemicals are ...
1.0MB
... system, the portal through which most foreign substances and microbes enter the body. 3. Present some work from our laboratory on the influence of intestinal microbes on allergic disease. ...
... system, the portal through which most foreign substances and microbes enter the body. 3. Present some work from our laboratory on the influence of intestinal microbes on allergic disease. ...
Immune system powerpoint immune_system
... Discuss with your group what you think is happening in the following processes. ◦ Why does your body undergo an allergic reaction? ◦ Why do some people’s bodies attack themselves (autoimmune diseases)? ◦ How does AIDS escape the human immune systems? ◦ Why do we have an inflammatory response when we ...
... Discuss with your group what you think is happening in the following processes. ◦ Why does your body undergo an allergic reaction? ◦ Why do some people’s bodies attack themselves (autoimmune diseases)? ◦ How does AIDS escape the human immune systems? ◦ Why do we have an inflammatory response when we ...
Immunology (A)
... The N-terminal end of Ig is characterized by sequence variability (V) in both the heavy and light chains, referred to as the VH and VL regions respectively. The rest of the molecule has a relatively constant (C) structure. (1’)The constant portion of the light chain is termed the CL region. The cons ...
... The N-terminal end of Ig is characterized by sequence variability (V) in both the heavy and light chains, referred to as the VH and VL regions respectively. The rest of the molecule has a relatively constant (C) structure. (1’)The constant portion of the light chain is termed the CL region. The cons ...
341-541 - McDermott.doc
... provided for topics we will cover and consist of a series of questions pertaining to the topic. As we finish a topic, answers to the questions posed on the Objective Sheets will be due the next class period and will be worth up to 1 extra credit point each (15-20/semester). Extra credit points will ...
... provided for topics we will cover and consist of a series of questions pertaining to the topic. As we finish a topic, answers to the questions posed on the Objective Sheets will be due the next class period and will be worth up to 1 extra credit point each (15-20/semester). Extra credit points will ...
B Cell - Biotechnology
... However, heavy chain genes are rearranged from only one chromosome, as are light chain genes. Therefore, any one B cell will contain one VH and one VL (antigen specificity) How? Allelic exclusion (Yancopoulos and Alt, 1986) ...
... However, heavy chain genes are rearranged from only one chromosome, as are light chain genes. Therefore, any one B cell will contain one VH and one VL (antigen specificity) How? Allelic exclusion (Yancopoulos and Alt, 1986) ...
Pathophysiology of imunity
... - example of localised immune-complexes-mediated inflammatory response. It developes due to repeated local exposure to exogenous antigen which reacts with preformed antibodies in the vessel wall ...
... - example of localised immune-complexes-mediated inflammatory response. It developes due to repeated local exposure to exogenous antigen which reacts with preformed antibodies in the vessel wall ...
Immune system
The immune system is a system of many biological structures and processes within an organism that protects against disease. To function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue. In many species, the immune system can be classified into subsystems, such as the innate immune system versus the adaptive immune system, or humoral immunity versus cell-mediated immunity.Pathogens can rapidly evolve and adapt, and thereby avoid detection and neutralization by the immune system; however, multiple defense mechanisms have also evolved to recognize and neutralize pathogens. Even simple unicellular organisms such as bacteria possess a rudimentary immune system, in the form of enzymes that protect against bacteriophage infections. Other basic immune mechanisms evolved in ancient eukaryotes and remain in their modern descendants, such as plants and insects. These mechanisms include phagocytosis, antimicrobial peptides called defensins, and the complement system. Jawed vertebrates, including humans, have even more sophisticated defense mechanisms, including the ability to adapt over time to recognize specific pathogens more efficiently. Adaptive (or acquired) immunity creates immunological memory after an initial response to a specific pathogen, leading to an enhanced response to subsequent encounters with that same pathogen. This process of acquired immunity is the basis of vaccination.Disorders of the immune system can result in autoimmune diseases, inflammatory diseases and cancer.Immunodeficiency occurs when the immune system is less active than normal, resulting in recurring and life-threatening infections. In humans, immunodeficiency can either be the result of a genetic disease such as severe combined immunodeficiency, acquired conditions such as HIV/AIDS, or the use of immunosuppressive medication. In contrast, autoimmunity results from a hyperactive immune system attacking normal tissues as if they were foreign organisms. Common autoimmune diseases include Hashimoto's thyroiditis, rheumatoid arthritis, diabetes mellitus type 1, and systemic lupus erythematosus. Immunology covers the study of all aspects of the immune system.