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The immune system is our body`s defense system. It has many parts
The immune system is our body`s defense system. It has many parts

... 4. It attacks the substances that is not part of our body ...
432W9EX1
432W9EX1

... 7. For each immunoglobulin isotype select the description(s) listed below (a-i) that are true about that isotype. Each description may be used once, more than once, or not at all; more than one description may apply to some isotypes. IgA: IgD: IgE: IgG: ...
Name of Student:
Name of Student:

Chapter 27: Communicable Diseases
Chapter 27: Communicable Diseases

... against the disease. 1. _______ is resistance to a disease. 3. Antibiotics-substances that can ____ bacteria or _____ its _______. a. _____ are _____ affected by antibiotics. E. Your Body’s Defenses 1. _____, ______, ________, ___________ and ____________-pathogens get destroyed quickly by _________ ...
The Immune System - Chicagoland Jewish High School
The Immune System - Chicagoland Jewish High School

... • Less abundant, but more effective than neutrophils • Form macrophages • Reach pathogen with pseudopodia • Engulf pathogen, fuse it with a lysosome • Kill pathogen with toxic oxygen or enzymes ...
1991 - Wsfcs
1991 - Wsfcs

... -increase in height -adjustment to change in light -adjustment to lack of water b) For TWO of the following physiological responses, explain how hormones cause the response in animals. -increase in height -adjustment to change in light -adjustment to lack of water c) Describe TWO different mechanism ...
Lecture 18
Lecture 18

... – Helps or “complements” the ability of antibodies and phagocytic cells to clear pathogens from an organism – It is part of the innate immune system that is not adaptable and does not change over the course of an individual's lifetime. – However, it can be recruited and brought into action by the ad ...
Quiz 06-07_key
Quiz 06-07_key

... A. skin B. mucous membranes C. ciliated respiratory tract D. secretions such as tears and saliva which contain enzymes E. all of the above ...
the immune system - World of Teaching
the immune system - World of Teaching

... T-Lymphocytes • Mature T-cells have T cell receptors which have a very similar structure to antibodies and are specific to 1 antigen. • They are activated when the receptor comes into contact with the Ag with another host cell (e.g. on a macrophage membrane or an invaded body cell) ...
THE IMMUNE SYSTEM
THE IMMUNE SYSTEM

... T-Lymphocytes • Mature T-cells have T cell receptors which have a very similar structure to antibodies and are specific to 1 antigen. • They are activated when the receptor comes into contact with the Ag with another host cell (e.g. on a macrophage membrane or an invaded body cell) ...
THE IMMUNE SYSTEM
THE IMMUNE SYSTEM

... T-Lymphocytes • Mature T-cells have T cell receptors which have a very similar structure to antibodies and are specific to 1 antigen. • They are activated when the receptor comes into contact with the Ag with another host cell (e.g. on a macrophage membrane or an invaded body cell) ...
Chapter 22 - FacultyWeb
Chapter 22 - FacultyWeb

... cytotoxic T cells/plasma cells 2. Memory B cells/plasma cells/NK cells 3. Phagocytes/plasma cells/antibodies 4. B cells/helper T cells/phagocytes/CD8 cells ...
Immune Response 1. Cells involved in the Immune response #1. B
Immune Response 1. Cells involved in the Immune response #1. B

... NK Cells: A lymphocyte that is part of the body’s initial innate immunity, which by unknown mechanisms is able to directly destroy cells recognized as foreign. It is not considered the main two types, but rather a third type of lymphocyte. In several immunodeficiency diseases, including AIDS, NK cel ...
HP_Tipaje Linfocitario_24 07 13
HP_Tipaje Linfocitario_24 07 13

... and cells widely distributed throughout the entire body. These components are interconnected by blood and lymph vessels, constituting a single well-communicated system. The response mechanisms of the immune system are the innate or non-adaptive immunity (the natural killer cells, for example) and th ...
MCDB 1030
MCDB 1030

... second and third lines of defense against a bacterial infection. Macrophages play an important role in the second line of defense by ingesting and killing bacteria. They play a role in the third line of defense by displaying antigens from the digested pathogens on the surface of MHC-II molecules in ...
Effector Mechanisms of Cell
Effector Mechanisms of Cell

... Toll-like receptors (TLRs) are a family of pattern recognition receptors that are activated by specific components of microbes and certain host molecules. INNATE RESPONOSE: They constitute the first line of defense against many pathogens and play a crucial role in the function of the innate immune s ...
B CELL
B CELL

... ADAPTIV IMMUNITY IS TRANSFERABLE Antibodies, antibody specificity, diversity Antibodies were discovered in the late 1800s (Emil Behting, Shibasaburo Kitasato) SERUM THERAPY antibodies specific to toxins Discovery of blood group antigens (Landsteiner) ...
MCB50 Immunity and Disease 1 Bacteria Lecture Outline March 2
MCB50 Immunity and Disease 1 Bacteria Lecture Outline March 2

... clinically and on isolation of the bacteria from a throat swab. 2. Scarlet fever This disease results from the release of toxic substances by S. pyogenes. If it occurs, it is usually associated with Streptococcal throat infections. It is associated with a rash which appears as a diffuse red blush wi ...
Humoral immune response
Humoral immune response

... • usually isohaemagglutinins and natural antibodies ...
Modulation of Function of Myeloid Cell Precursors by Thapsigargan
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... Modulation of Function of Myeloid Cell Precursors by Thapsigargan James Haydel, Paul Thevenot , Paulo Rodriguez ...
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Microbial Infection

T cells - Cal State LA - Instructional Web Server
T cells - Cal State LA - Instructional Web Server

... surfaces of all nucleated cells. Class II MHC proteins are found only on the surface of B lymphocytes, macrophages, and dendritic cells, all of which are APCs (Figure 22.11). ...
MCMP 422 - Welcome to people.pharmacy.purdue.edu!
MCMP 422 - Welcome to people.pharmacy.purdue.edu!

... 6. How T cells develop in the body and differentiate into specialized subsets 7. How lymphocytes undergo positive and negative selection 8. How B cells and T cells are activated and participate in adaptive immunity 9. The basis of MHC polymorphism and its role in the immune response 10. How the comp ...
File
File

... Another group of T lymphocytes secrete cytokines that activate B lymphocytes and phagocytes. When pathogens infect tissue, some phagocytes capture the pathogen and display fragments of its antigens on their surface. These antigen presenting cells activate the production of a clone of T lymphocytes t ...
Immune System Study Sheet
Immune System Study Sheet

... 21. B cells (memory, plasma), T cells (helper, CTL, memory), humoral immunity, cellular immunity 22. It can fight a variety of pathogens 23. swelling, redness, pain 24. tissue damage caused by phagocytes, macrophages 25. phagocytes, macrophages 26. Denatures pathogens enzymes 27. mucus 28. enzymes 2 ...
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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.
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