Following their activation, naive CD4+ T cells differentiate into one of several subsets of effector T...
- Following their activation, naive CD4+ T cells differentiate into one of several subsets of effector T cells (TH1, TH2, TH17, TFH, and iTreg). This developmental choice is determined by “fate-specifying” cytokines that T cells may be are exposed to during their activation. In order for this system to be flexible enough to produce any of the different effector subsets, activated CD4+ T cells must express
Answer choices: Choose one
- Low levels of all the fate specifying cytokines (e.g. IL-4, IL-17, etc.)
- All of the STAT proteins involved in fate-specifying cytokine receptor signaling (e.g. STAT1, STAT6, etc.)
- All of the lineage-specific transcription factors (e.g. T-bet, Bcl-6, etc.)
Homework Answers
They need to exhibit low level of fate specifying cytokines . Because the action of cytokines is cell cycle dependent.
The other events mentioned options occur during maturation and as post translational modifications respectively
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Following their activation, naive CD4+ T cells differentiate
into one of several subsets of effector T...
Identify which cytokines are responsible for the differentiation of CD4+ T cells to Th1, Th2, and...
Identify which cytokines are responsible for the differentiation of CD4+ T cells to Th1, Th2, and Th17 subsets. Also identify which cells are responsible for releasing these cytokines.
Upon encountering an appropriate MHC Class I on an infected cell: Select one: a. naive T1...
Upon encountering an appropriate MHC Class I on an infected cell: Select one: a. naive T1 cells secrete cytokines b. TH1 cells differentiate into Th2 cells O c. CD8 cytotoxic cells destroy the infected cell O d . CD4 T cells release IL-4 e. BCRs become cross linked and signaling occurs All of the following are characteristic of NK cells EXCEPT Select one: O a. they express Toll-like receptors O b. they are tolerant of healthy cells c. they express...
No explanation needed. 1. T cells with high affinity for self antigens are eliminated during T...
No explanation needed. 1. T cells with high affinity for self antigens are eliminated during T cell selection because A. These cells have limited lifespan B. These cells do not recycle C. These cells can bind to self antigen on body cells leading to body cell destruction D. These cells have no memory 2. HIGM results from a mutation in _______. A. CD40 B. CD40L C. CD28 D. CD80/86 3. CSR results in chromosomal rearrangement of IgM to produce A....
1.One group of immune deficiency diseases is caused by an inability of CD8 effector T cells...
1.One group of immune deficiency diseases is caused by an inability of CD8 effector T cells to kill virus-infected target cells, due to defects in cytotoxic vesicle exocytosis. Because of the inflammatory response that accompanies a normal virus infection, together with the prolongation of this response due to the inability to control the infection, patients with these disorders suffer from tissue damage caused by the infiltration of effector CD8 cells and activated macrophages into multiple organs. In addition, a subset...
1. Mature B cells require particular receptors to be engaged by ligand to stimulate these cells...
1. Mature B cells require particular receptors to be engaged by ligand to stimulate these cells to become antibody-secreting cells. Fill-in the table below with the receptor(s) on naïve B cells that transmit each signal and the corresponding ligand(s) that engage that receptor. (6 pts) Receptor(s) on B cell Ligand(s) Location in body where receptor engagement occurs Signal 1 Signal 2 b. Briefly describe what happens to mature B cells that receive Signal 1, but not Signal 2? (2 pts)...
immunology practing samples and not sure if my answers correct. 1. NK cells are effective against...
immunology
practing samples and not sure if my answers correct.
1. NK cells are effective against viral infections because many virus infected cells a. are susceptible to lysis b. are susceptible to phagocytosis c. show reduced levels of MHC class I molecules d. show reduced levels of MHC class II molecules e. none of the above 2. Arachidonic acid serves as a substrate in the lipoxygenase and cyclooxygenase pathways resulting in the production of a. histamine, leukotrienes b. leukotrienes, prostaglandins...
The Jounal of Immunol nes of the National Academy of Sciences USA 89. 6550-6554. 01992, by permis...
explain figure 2 please on the third page
The Jounal of Immunol nes of the National Academy of Sciences USA 89. 6550-6554. 01992, by permision of Proc. Natl. Acad. Sci. USA Vol. 89, pp. 6550-63554, July 1992 Immunolog A 39-kDa protein on activated helper T cells binds CD40 and transduces the signal for cognate activation of B cells RANDOLPH J. NOELLE时, MEENAKSHI ROY.. DAVID M. SHEPHERD., IVAN STAMENKOVICt JEFFREY A. LEDBETTER, AND ALEJANDRO ARUFFo Departmend Microbiology. Dartmouth Medical School One...
Identify which cytokines are responsible for the differentiation of CD4+ T cells to Th1, Th2, and Th17 subsets. Also identify which cells are responsible for releasing these cytokines.
Upon encountering an appropriate MHC Class I on an infected cell: Select one: a. naive T1 cells secrete cytokines b. TH1 cells differentiate into Th2 cells O c. CD8 cytotoxic cells destroy the infected cell O d . CD4 T cells release IL-4 e. BCRs become cross linked and signaling occurs All of the following are characteristic of NK cells EXCEPT Select one: O a. they express Toll-like receptors O b. they are tolerant of healthy cells c. they express...
immunology
practing samples and not sure if my answers correct.
1. NK cells are effective against viral infections because many virus infected cells a. are susceptible to lysis b. are susceptible to phagocytosis c. show reduced levels of MHC class I molecules d. show reduced levels of MHC class II molecules e. none of the above 2. Arachidonic acid serves as a substrate in the lipoxygenase and cyclooxygenase pathways resulting in the production of a. histamine, leukotrienes b. leukotrienes, prostaglandins...
explain figure 2 please on the third page
The Jounal of Immunol nes of the National Academy of Sciences USA 89. 6550-6554. 01992, by permision of Proc. Natl. Acad. Sci. USA Vol. 89, pp. 6550-63554, July 1992 Immunolog A 39-kDa protein on activated helper T cells binds CD40 and transduces the signal for cognate activation of B cells RANDOLPH J. NOELLE时, MEENAKSHI ROY.. DAVID M. SHEPHERD., IVAN STAMENKOVICt JEFFREY A. LEDBETTER, AND ALEJANDRO ARUFFo Departmend Microbiology. Dartmouth Medical School One...
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