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Presentation slides
Presentation slides

ch21a_wcr
ch21a_wcr

... Portions copyright Pearson Education ...
Lesson Plan - The Vaccine Makers Project
Lesson Plan - The Vaccine Makers Project

... central role in the innate immune response because they ingest pathogens. They also release cytokines, which activate other parts of the immune response. Macrophages are long-lived. These cells also ingest debris, such as dead cells in tissues. ...
Document
Document

... TLR ligands are promising candidates as vaccine adjuvants. In experimental vaccines TLR agonists are very potent adjuvants in capacity of activating cells expressing the TLR, in particular, dendritic cells (DCs), which are the key antigen presenting cells. The TLR4 ligand LPS has been experimentally ...
Regulatory T cells and COPD
Regulatory T cells and COPD

... thymus with naturally suppressive functions.1 2 The importance of both Foxp3 (and therefore Tregs) to immune tolerance is amply demonstrated in mice and humans that lack functional Foxp3 and develop a variety of profound autoimmune symptoms. Tregs are therefore critical for controlling otherwise sel ...
cell mediated immune response
cell mediated immune response

... counts, the inhibition of T cell activation, proliferation, immunity exclusion and cooperation with other cells had affected the overall immunity in fishes. So the immune complex of pathogens induces the T-cell counts compared to other treated and control fishes. The increment of T-cell activation, ...
4.9 Immune System Readings
4.9 Immune System Readings

... White blood cells are part of this system. There are two types on white blood cells; one kind, phagocytes, eat up the germ invaders, the other kind, lymphocytes, allow the body to remember the germ invader incase it attacks again in the future. These white blood cells are found in lots of places in ...
Chapter 3
Chapter 3

... and is shown in Figure 3-1. Wells in a plastic plate are coated with BSA, then the plate is washed with a buffer to remove excess BSA. The serum is then added so that anti-BSA antibodies bind to the immobilized layer of BSA. The plate is washed again to remove unbound antibodies. Then, for example, ...
دانلود
دانلود

... Follicular helper T (Tfh) cells are a distinct subset of CD4+ helper T (Th) cells that regulate the development of antigen-specific B cell immunity. Tfh cell Surface phenotype αβ TCR, CD3, CD4, CXCR5) Upon exposure to a foreign antigen, Tfh cells help B cells generate antibody-producing plasma cells ...
IMMUNOSUPPRESSANTS.
IMMUNOSUPPRESSANTS.

Glycogen metabolism supports effector function and energy
Glycogen metabolism supports effector function and energy

... Dendritic cells (DCs), professional antigen presenting cells of the immune system, serve as a bridge between the innate and adaptive immune responses. Activation of DCs by a stimulus through toll-like receptors (TLRs) is coupled with an increase in energy demand fulfilled by a glycolytic burst, whic ...
Immunity and the Invertebrates
Immunity and the Invertebrates

... after the blood stops flowing, the immune system begins its work to eliminate undesirable microbes introduced with the wound. Already on the scene (or quick to arrive) are phagocytic white blood cells known as macrophages. These cells not only engulf and destroy any invading microbes but also releas ...
Can helper T-17 cells play a role in dengue haemorrhagic
Can helper T-17 cells play a role in dengue haemorrhagic

... to mediate inflammation, by stimulating production of inflammatory cytokines, such as TNF-alpha, IL1beta and IL-6, and inflammatory chemokines, including CXCL-6, CXCL-7, CXCL-8, IL-8 and monocyte chemoattractant protein-1 (MCP-1), and metalloproteinases that promote the recruitment of neutrophils an ...
PowerPoint Presentation - Atypical Cutaneous Leishmaniasis
PowerPoint Presentation - Atypical Cutaneous Leishmaniasis

... CNS can activate APR in the liver. – IL-1, IL-6, TNF-a, Oncostatin-M, Leukemia inhibitory factor, produced by CNS can ALL activate production of acute phase proteins. ...
2. In the cell-mediated response, cytotoxic T cells counter
2. In the cell-mediated response, cytotoxic T cells counter

... • A cytotoxic T cell is activated by specific contacts with class I MHC-antigen complexes on an infected cell and by IL-2 from a helper T cell. • The activated cytotoxic T cell differentiates into an active killer, which kills its target cell - the antigenpresenting cell - primarily by releasing pe ...
Active and passive immunity IGCSE
Active and passive immunity IGCSE

2. Immunity to malaria
2. Immunity to malaria

... Polymorphism in host genes is associated with susceptibility  IFN-γ  Interferon regulatory factors  TNF  IL-10, IL-4 ...
E Tcall - Ed Skilling Institute
E Tcall - Ed Skilling Institute

Slide 1
Slide 1

... • Don’t forget that these proteins are made by transcription and translation of certain regions of the ...
Microbiology Jeopardy
Microbiology Jeopardy

Immuno Review Sheet
Immuno Review Sheet

... identified and sorted (FACS) based on cell size and surface markers. Germinal centers: an area of secondary lymphoid tissue where B cells differentiate and undergo antibody class switching (that is, B cells first produce IgM early in an infection, then switch to another type of immunoglobulin, usual ...
Umetsu - Stanford University
Umetsu - Stanford University

... Terabe M, Matsui S, Noben-Trauth N, Chen H, Watson C, Donaldson D, et al. NKT cellmediated repression of tumor immunosurveillance by IL-13 and the IL-4R-STAT6 pathway. Nat Immunol 2000; 1:515-20. Ansel KM, Lee, DU, Rao A. An epigenetic view of helper T cell differentiation. Nature Immunol. 4:616. Sh ...
Q1. Use the information in the passage and your
Q1. Use the information in the passage and your

... acquired immunodeficiency syndrome (AIDS). Eventually, people with AIDS die because they are unable to produce an immune response to pathogens. ...
Basic Laboratory Tests Complete Blood Counts (CBC)
Basic Laboratory Tests Complete Blood Counts (CBC)

... radiation treatment and some forms of leukemia. Reduced counts are found with immunodeficiency diseases, severe sepsis, systemic lupus, bone marrow failure, medication reactions and the late stages HIV infection. Monocyte (Monos) Monocytes are the largest of the white blood cells. Monocytes digest d ...
PLoS Pathog
PLoS Pathog

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Phagocyte



Phagocytes are cells that protect the body by ingesting (phagocytosing) harmful foreign particles, bacteria, and dead or dying cells. Their name comes from the Greek phagein, ""to eat"" or ""devour"", and ""-cyte"", the suffix in biology denoting ""cell"", from the Greek kutos, ""hollow vessel"". They are essential for fighting infections and for subsequent immunity. Phagocytes are important throughout the animal kingdom and are highly developed within vertebrates. One litre of human blood contains about six billion phagocytes. They were first discovered in 1882 by Ilya Ilyich Mechnikov while he was studying starfish larvae. Mechnikov was awarded the 1908 Nobel Prize in Physiology or Medicine for his discovery. Phagocytes occur in many species; some amoebae behave like macrophage phagocytes, which suggests that phagocytes appeared early in the evolution of life.Phagocytes of humans and other animals are called ""professional"" or ""non-professional"" depending on how effective they are at phagocytosis. The professional phagocytes include many types of white blood cells (such as neutrophils, monocytes, macrophages, mast cells, and dendritic cells). The main difference between professional and non-professional phagocytes is that the professional phagocytes have molecules called receptors on their surfaces that can detect harmful objects, such as bacteria, that are not normally found in the body. Phagocytes are crucial in fighting infections, as well as in maintaining healthy tissues by removing dead and dying cells that have reached the end of their lifespan.During an infection, chemical signals attract phagocytes to places where the pathogen has invaded the body. These chemicals may come from bacteria or from other phagocytes already present. The phagocytes move by a method called chemotaxis. When phagocytes come into contact with bacteria, the receptors on the phagocyte's surface will bind to them. This binding will lead to the engulfing of the bacteria by the phagocyte. Some phagocytes kill the ingested pathogen with oxidants and nitric oxide. After phagocytosis, macrophages and dendritic cells can also participate in antigen presentation, a process in which a phagocyte moves parts of the ingested material back to its surface. This material is then displayed to other cells of the immune system. Some phagocytes then travel to the body's lymph nodes and display the material to white blood cells called lymphocytes. This process is important in building immunity, and many pathogens have evolved methods to evade attacks by phagocytes.
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