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Immune System ppt
Immune System ppt

Immune system
Immune system

... cytokines (IFNg, TNF) that are produced by TH1 lymphocytes ...
lec #1 done by Leen AbdelFattah / Slides #1
lec #1 done by Leen AbdelFattah / Slides #1

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SG9 Immune Response

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A1981LE35900001

... significant numbers with a peak response after four to five days. [The SCI® indicates that this paper has been cited over 365 times since 1967.] ...
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TCR rearrangement and selection in the thymus

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... Foot-and-mouth Disease Virus (FMDV) causes a highly contagious acute vesicular disease affecting a number of economically important animal species. Little is known about the interaction of the virus with cattle dendritic cells (DC). Development of a comprehensive protective T and B cell response req ...
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Lymphocytes - Spark (e

... They are also called natural killers because they are produced during the pregnancy. NK cells are a part of the innate immune system and play a important role in defending the host from both tumors and virally infected cells. They are used to produce cytokines. These are a broad and loose category o ...
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第五章 细胞因子

... Section 6 ...
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... Rhinoviruses infect the epithelial cells of the respiratory tract. The viruses can be grouped according to the epithelial cell receptors to which they bind. Major-group viruses bind to the cell surface receptor ICAM-1 for entry  1 ; minor-group viruses bind to the unrelated low density lipoprotein ...
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AP Chapters 42 Study Guide: Circulation and Gas Exchange

... also contain antimicrobial proteins such as __________________________ which digests the cell wall of many bacteria. 3. If a germ manages to penetrate the skin, it might encounter one of several types of phagocytic cells. The most common are ____________________________ (60-70%) of white blood cells ...
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ImmunLec21-2010 - 81-493

... human infant the thymus weighs 70 gms by age 40-50 it is only 3 gms. ...
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... Figure 1: Lymphocytes are the type of white blood cells essential for specific immunity. All lymphocytes originate in the bone marrow. T cells mature in the thymus. Cytotoxic T cells directly attack foreign cells. Helper T cells stimulate B cells. B cells convert into plasma cells which release anti ...
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Organs of the Immune System 01/31/06

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Overview of Adaptive Immunity 01/24/06

... Cell-mediated Immunity  Conferred via lymphocyte exchange  Cell dependent  Modulates humoral immunity  Cytotoxic ...
Immunity Review
Immunity Review

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... Naive T lymphocytes home to secondary lymphoid organs, where they may encounter antigens presented by mature dendritic cells on class I or class II MHC molecules and thus become activated ...
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Worksheet #30 - Ch. 51.3

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... Programmed death-ligand 1 (PD-L1) is a transmembrane protein that has been speculated to play a major role in suppressing the immune system during particular events such as pregnancy, tissue allografts, autoimmune disease and other disease states such as hepatitis. ...
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Role of the immune cells recognizing MHC-I like

... the recruitment and the role of non-conventional immune cell populations, NK, NKT and T gamma-delta lymphocytes infiltrating CNS in mouse experimental models such as olfactory axotomy and EAE. It was previously showed that NK and NKT cells display neuroprotective effects during EAE. The actions of t ...
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T cell



T cells or T lymphocytes are a type of lymphocyte (in turn, a type of white blood cell) that plays a central role in cell-mediated immunity. They can be distinguished from other lymphocytes, such as B cells and natural killer cells (NK cells), by the presence of a T-cell receptor (TCR) on the cell surface. They are called T cells because they mature in the thymus (although some also mature in the tonsils). The several subsets of T cells each have a distinct function. The majority of human T cells rearrange their alpha/beta T cell receptors and are termed alpha beta T cells and are part of adaptive immune system. Specialized gamma delta T cells, which comprise a minority of T cells in the human body (more frequent in ruminants), have invariant TCR (with limited diversity), can effectively present antigens to other T cells and are considered to be part of the innate immune system.
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