• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Hypersensitivity - TOP Recommended Websites
Hypersensitivity - TOP Recommended Websites

... 5 tuberculin units of liquid tuberculin admistered intradermally ...
No Slide Title
No Slide Title

... – ADP causes circulating platelets to become sticky – adhere to the first layer of aggregating platelets – results in the secretion of more ADP by the incoming platelets – release of serotonin, epinephrine and thromboxane act as vasoconstrictors to reinforce the ...
Blood/Immunity Lab - University of Missouri
Blood/Immunity Lab - University of Missouri

... dissolved solutes – Includes proteins/antibodies, ions, organic molecules, hormones ...
Immune Response
Immune Response

... Pathogens are disease-causing agents such as viruses and bacteria that disrupt or destroy the cells of their host. The immune system is the body’s main defense against these invaders. The immune system recognizes, attacks, destroys and “remembers” every type of pathogen that enters the body. It does ...
immune formula
immune formula

T lymphocytes of the normal human cornea
T lymphocytes of the normal human cornea

Cytokines
Cytokines

... antigen bound to MHC Class II on antigenpresenting cells and are driven to differentiate into Th1 or Th2 cells. • Th1 cells drive the differentiation and proliferation of CD8+ cytotoxic T cells (CTLs). • Th2 cells drive the differentiation and proliferation of B cells to become antibodyproducing pla ...
How T cells recognize antigen
How T cells recognize antigen

021309.M1-Immuno.TCellDevelopment
021309.M1-Immuno.TCellDevelopment

... • 5x107 new thymocytes/day • 1-2x106 will leave thymus Macmillan Magazines ...
this PDF file - Smart Science Technology
this PDF file - Smart Science Technology

Document
Document

... Their role is to phagocytose, or engulf and then digest, cellular debris and pathogens, either as stationary or as mobile cells. They are specialized phagocytic cells that attack foreign substances, infectious microbes and cancer cells through destruction and ingestion. They participate in the immun ...
Louis Kock - TB-IPCP
Louis Kock - TB-IPCP

... IFN-γ, GM-CSF and TNF in paradoxical TB-IRIS. IL-17, IL-18, and IL-22 have also been noted to be elevated in both paradoxical and unmasking TB-IRIS. IL-17 and IL-22 produced by innate cells(e.g. lymphoid tissue inducer/like cells,Th17,NKT cells). IL-18 is secreted by macrophages and dendritic cells. ...
Distribution of 814 NHL cases PathCentre 1990
Distribution of 814 NHL cases PathCentre 1990

... ab + T CELLS - CD8+ - CD4+ ...
1 Supplemental Online Methods Manufacture of MART
1 Supplemental Online Methods Manufacture of MART

... In-process and final product testing included Gram stain, fungal stain, sterility culture for bacteria and fungus, mycoplasma assay (MycoAlert assay, Lonza, Walkersville, MD), and endotoxin assay (Endosafe PTS system, Charles River, Charleston, SC). Transduction efficiency was tested with MHC tetram ...
Module 5: Immunity to pathogens
Module 5: Immunity to pathogens

... The immunity that plays major role against extracellular bacteria is the humoral or antibody mediated immunity as it prevents the infection by neutralizing the toxins. Usually polysaccharide antigens are prototypic thymus-independent antigens and humoral immunity is the basic line of defense against ...
Chapter 20 The Lymphatic System, Nonspecific Resistance to
Chapter 20 The Lymphatic System, Nonspecific Resistance to

... • Lymph Flow from smallest to largest: • Capillaries  vessels  trunks  ducts • Lymph vessels anastomose and supply and drain lymph nodes along their course ...
cells
cells

...  Fever is the condition of an abnormally high body temperature, accompanied by increased pulse rate and dry skin  It provides non-specific defense against disease  Fever is physiological response to infection  Many proteins and breakdown products of proteins, toxins and lipopolysaccharides, part ...
type_III_and_IV_HS_r..
type_III_and_IV_HS_r..

... 4-The TH1 cells secrete IFN-γ, which is the most potent macrophageactivating cytokine known. 5-Macrophages produce substances that cause tissue damage and promote fibrosis, and TH17 secrete IL-17 and other cytokines recruit leukocytes ...
Document
Document

... The function of the thymus is to receive immature T cells – that are produced by hematopoietic stem cells (HSC) in the red bone marrow – and train them into functional, mature T cells that attack only foreign cells. ...
Cancer immune cycle
Cancer immune cycle

Maria Lobo`s Skin Notes
Maria Lobo`s Skin Notes

...  Mast cells are effector cells in allergic disease and are near hair follicles, sebaceous and sweat glands and near blood vessels. They have IgE receptors and release histamine.  Monocytes circulate in the blood and migrate into tissue including the skin where they activate as macrophages. Phagocy ...
Adoptive therapy with CD8+ T cells: it may get by with a little
Adoptive therapy with CD8+ T cells: it may get by with a little

Cardiovascular System_Lecture IV - Medical
Cardiovascular System_Lecture IV - Medical

... A normal platelet count in a healthy person is between 150 and 400 (x 109/L of blood). Both thrombocytopenia (or thrombopenia) and thrombocytosis may present with coagulation problems. Generally, low platelet counts increase bleeding risks (although there are exceptions, e.g. Immune heparin-induced ...
Microbiology
Microbiology

... IL-17 IL-4 ...
Innate immune recognition
Innate immune recognition

... Triggering of PRRs on macrophage or dendritic cells can induce a LARGE variety of events including: Increased phagocytosis Production of cytokines and inflammatory mediators: Interferons to induce anti-viral state Chemokines to attract migrating cells Etc, etc. Increased cell migration Changes in e ...
< 1 ... 121 122 123 124 125 126 127 128 129 ... 288 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report