Lecture 7 Host Defense Against Infection
... Capable of phagocytosis Process and present antigen using MHC class I or II receptors LPS can directly induce release of mast cell mediators Complement (C3a and C5a) induce mast cells to release mediators ...
... Capable of phagocytosis Process and present antigen using MHC class I or II receptors LPS can directly induce release of mast cell mediators Complement (C3a and C5a) induce mast cells to release mediators ...
The Immune System
... • The immune system is able to distinguish between “self” molecules and “non-self” molecules. ...
... • The immune system is able to distinguish between “self” molecules and “non-self” molecules. ...
Southampton Health Journal
... junctional communication from adjacent cells when they become sick; it is likely that this response evolved early as an extracellular response to intracellular disease. There have been few studies of gap junctional intercellular communication in phagocytes and lymphocytes. When my second paper was a ...
... junctional communication from adjacent cells when they become sick; it is likely that this response evolved early as an extracellular response to intracellular disease. There have been few studies of gap junctional intercellular communication in phagocytes and lymphocytes. When my second paper was a ...
Blood and the Immune System
... WBC that produce antibodies Foreign bodies contain many antigens on their surface. T-cell lymphocytes are produced in bone marrow stored in thymus gland - Seeks out intruder and signals attack B-cell leukocytes are anti-body producing. Each B-cell produces a single type of antibody. Super-antibody-p ...
... WBC that produce antibodies Foreign bodies contain many antigens on their surface. T-cell lymphocytes are produced in bone marrow stored in thymus gland - Seeks out intruder and signals attack B-cell leukocytes are anti-body producing. Each B-cell produces a single type of antibody. Super-antibody-p ...
(non-specific) immune system
... • Granular lymphocytes, different from T- and Blymphocytes • Cytotoxicity to tumor cells and virally infected autologous cells (perforins) • Play a role in defense against some bacterial, fungal and ...
... • Granular lymphocytes, different from T- and Blymphocytes • Cytotoxicity to tumor cells and virally infected autologous cells (perforins) • Play a role in defense against some bacterial, fungal and ...
Chapter 37 - Leon County Schools
... and organisms. However, you have shown no signs of these diseases. What happened when you were an infant and again at age 14? A You were immunized against DPT. B You were given a booster shot. C You got a shot of interferon. D You developed one of these diseases. ...
... and organisms. However, you have shown no signs of these diseases. What happened when you were an infant and again at age 14? A You were immunized against DPT. B You were given a booster shot. C You got a shot of interferon. D You developed one of these diseases. ...
File - Sheffield Peer Teaching Society
... The Peer Teaching Society is not liable for false or misleading information… ...
... The Peer Teaching Society is not liable for false or misleading information… ...
IMMUNOLOGY (Ms. Lucky Juneja)
... distinguish subtle differences among antigens. Antibodies can distinguish between two protein molecules that differ in only a single amino acid. The immune system is capable of generating tremendous diversity in its recognition molecules,allowing it to recognize billions of unique structures on ...
... distinguish subtle differences among antigens. Antibodies can distinguish between two protein molecules that differ in only a single amino acid. The immune system is capable of generating tremendous diversity in its recognition molecules,allowing it to recognize billions of unique structures on ...
lec #1 done by Leen AbdelFattah / Slides #1
... he proved that by taking crusts of an infected cow and injected it to an infected boy , the boy was cured. -Slide7: elie metchinkoff : studied the mechanism of phagocytosis on the ameba . -Slide 10: smallpox virus is now completely eradicated Diphtheria very low incidents but still exists But still ...
... he proved that by taking crusts of an infected cow and injected it to an infected boy , the boy was cured. -Slide7: elie metchinkoff : studied the mechanism of phagocytosis on the ameba . -Slide 10: smallpox virus is now completely eradicated Diphtheria very low incidents but still exists But still ...
Importance of Cell Surfaces
... Mutations in certain genes may show as an autoimmune disease Hemolytic anaemia, lupus erythematosis, polyarthritis, immune-mediated thrombocytopenia where immune system destroys cells responsible for blood clotting ...
... Mutations in certain genes may show as an autoimmune disease Hemolytic anaemia, lupus erythematosis, polyarthritis, immune-mediated thrombocytopenia where immune system destroys cells responsible for blood clotting ...
Immune System Cartoon Strip
... You will need to use the “Immune System Reading and Vocabulary” handout as a reference for this activity. Directions 1. This activity will be divided into 2 different cartoons. Cartoon 1 = Bacteria Infection; Cartoon 2 = Viral Infection 2. For each cartoon you will need to include at least 10 cartoo ...
... You will need to use the “Immune System Reading and Vocabulary” handout as a reference for this activity. Directions 1. This activity will be divided into 2 different cartoons. Cartoon 1 = Bacteria Infection; Cartoon 2 = Viral Infection 2. For each cartoon you will need to include at least 10 cartoo ...
Immune_System_Vocabulary
... Immune System Vocabulary Pathogen – “germ”; anything that makes one sick, other than a genetic cause Immune system – in a vertebrate, the defense against pathogens Leukocytes – white blood cells Innate immunity – all animals have this defense against pathogens; includes barriers and inflammation Ada ...
... Immune System Vocabulary Pathogen – “germ”; anything that makes one sick, other than a genetic cause Immune system – in a vertebrate, the defense against pathogens Leukocytes – white blood cells Innate immunity – all animals have this defense against pathogens; includes barriers and inflammation Ada ...
A1981LE35900001
... culture vessel was developed. It was obvious in 1966 that culture techniques were becoming mandatory for immunological studies so that the development of 'primary' responses in vitro was timely. "In retrospect, the development of the work owed a lot, not only to encouragement from numerous colleague ...
... culture vessel was developed. It was obvious in 1966 that culture techniques were becoming mandatory for immunological studies so that the development of 'primary' responses in vitro was timely. "In retrospect, the development of the work owed a lot, not only to encouragement from numerous colleague ...
White Blood Cell Lab
... • Circulating WBCs do not stay in bloodstream – granulocytes leave in 8 hours and live 5 days longer – monocytes leave in 20 hours, transform into macrophages and ...
... • Circulating WBCs do not stay in bloodstream – granulocytes leave in 8 hours and live 5 days longer – monocytes leave in 20 hours, transform into macrophages and ...
Immune System
... • Function: fight infection through the production of [specialized] cells that inactivate foreign substances or cells • It is main defense against pathogens ▫ Recognizes, attacks, destroys, and “remembers” each type of pathogen that enters the body ...
... • Function: fight infection through the production of [specialized] cells that inactivate foreign substances or cells • It is main defense against pathogens ▫ Recognizes, attacks, destroys, and “remembers” each type of pathogen that enters the body ...
Document
... and other glycoproteins that can interact with and trap bacteria in the mucus. In addition, antimicrobial peptides such as defensins are secreted by Paneth cells located at the bottom of the intestinal crypts. Epithelial cells also act as microbial sensors by secreting factors such as IL-8, MCP-1, R ...
... and other glycoproteins that can interact with and trap bacteria in the mucus. In addition, antimicrobial peptides such as defensins are secreted by Paneth cells located at the bottom of the intestinal crypts. Epithelial cells also act as microbial sensors by secreting factors such as IL-8, MCP-1, R ...
Matching - use the key below to answer questions 1
... Final Review Worksheet 1. What is the first line of defense against microbes? External barriers, skin, mucous membranes 2. What is the difference between a B & a T cell. B cells mark foreign cells, T cells destroy them. 3. Describe the different types of B and T cells. Memory cells: provides future ...
... Final Review Worksheet 1. What is the first line of defense against microbes? External barriers, skin, mucous membranes 2. What is the difference between a B & a T cell. B cells mark foreign cells, T cells destroy them. 3. Describe the different types of B and T cells. Memory cells: provides future ...
Chapter 12 Outline - Navarro College Shortcuts
... recognition and understanding over the past two decades, largely due to research into AIDS, cancer, and autoimmune disorders. Its importance in fighting disease and maintaining healthy homeostatic balance within nearly all body systems cannot be overstated. Although at first unfamiliar to students, ...
... recognition and understanding over the past two decades, largely due to research into AIDS, cancer, and autoimmune disorders. Its importance in fighting disease and maintaining healthy homeostatic balance within nearly all body systems cannot be overstated. Although at first unfamiliar to students, ...
Chapter 17: IR to Infectious Disease
... Chapter 17: IR to Infectious Disease • In BIOL 304, we examined how pathogens can establish an infection in a susceptible host • Re: the 7 components of pathogenicity!! • On the other hand, humans are defended by: ...
... Chapter 17: IR to Infectious Disease • In BIOL 304, we examined how pathogens can establish an infection in a susceptible host • Re: the 7 components of pathogenicity!! • On the other hand, humans are defended by: ...
Intro to Immune System Chpt. 1
... Two Major subsets, TH (CD4) and TC (CD8) Third type TS not as clear Mature T cell expresses TCR TCR cannot recognize antigen on its own MHC I (all nucleated cells) or MHC II (APCs) is required • TH cells secrete cytokines • TC less cytokines, more cytotoxic (virus and tumor survailance) ...
... Two Major subsets, TH (CD4) and TC (CD8) Third type TS not as clear Mature T cell expresses TCR TCR cannot recognize antigen on its own MHC I (all nucleated cells) or MHC II (APCs) is required • TH cells secrete cytokines • TC less cytokines, more cytotoxic (virus and tumor survailance) ...
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.