Naive T cells in CD69-knockout mice might: Group of answer choices Have a defect in recognizing antigen on activated dendritic cells Not be detained in the lymph node to get activated Have a defect in lymph node entry and accumulate in the blood Have a defect in responding to inflammatory cytokines in the lymph node Remain trapped in lymph nodes and fail to recirculate

Naive T cells in CD69-knockout mice might: Group of answer choices Have a defect in recognizing antigen on activated dendritic cells Not be detained in the lymph node to get activated Have a defect in lymph node entry and accumulate in the blood Have a defect in responding to inflammatory cytokines in the lymph node Remain trapped in lymph nodes and fail to recirculate

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter22: Genes And Disease: Cancer

Section: Chapter Questions

Problem 9SQ

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Similar questions

Match the immune cell with its main function. ___dendritic cell a. professional phagocyte ___B cell b. antigen-presenter ___helper T cell c. activates other lymphocytes ___NK cell d. makes antibodies ___macrophage e. kills ailing body cells that lack MHC markers
Drag each label into the appropriate position to identify what cell type is described by the label. Lead to the synthesis of antibodies Tested to make sure they don't harm one's own tissues Thymosin stimulates them to proliferate Mature from thymic tissues Capable of producing memory cells Involved with IgG and IgM formation in the secondary immune response Arise originally from bone marrow Lymphocytes Can produce lethal hits to infected self-cells Division stimulated by interleukin Involved with antibody- mediated immunity Differentiate into plasma cells when activated T cells B cells Both
L T cells and B cells exhibit certain similarities and differences. Check () the appropriate spaces in the table below to indicate the lymphocyte type that exhibits eachcharacteristic. Characteristi cell cell Originates in bone marrow from stem cells called hemocytoblasts Progeny are plasma cells Progeny include suppressors, helpers, and killer cells Progeny include memory cells Is responsible for directly attacking foreign cells or virus-infected cells Produce antibodies that are released to body fluids Bears a cell-surface receptor capable of recognizing a specific antigen Forms clones upon stimulation Accounts for most of the lymphocytes in the circulation
All of the following statements concerning regulatory T cells (Treg) are correct, EXCEPT: The regulatory cytokines produced by regulatory T cells are IL-12 and TGF-B O Thymocytes that recognize self-antigen in the thymus with a certain affinity become natural (central) regulatory T cells O In the periphery T cells that recognize self-antigen in the presence of TGF-B become induced regulatory T cells O A Treg cell can suppress self-reactive lymphocytes that recognize peptides different from that recognized itself provided that the peptides are derived from the same tissue O A Treg cell can suppress self-reactive lymphocytes that recognize peptides different from that recognized by itself provided that the peptides are presented by the same antigen-presenting cell (APC)
Use the figure to match the following. Drag the appropriate labels to their respective targets. Area where T cells become immunocompetent Area seeded by immunocompetent B and T cells Area where activated memory cells and effector T cells recirculate Area where B cells become immunocompetent Submit Request Answer Circulation in blood Immunocompetent, but still naive, lymphocyte migrates via blood Immature lymphocytes Reset Help
Determine which statement(s) are true/false NK cells are a type of lymphocyte involved in acquired immunity Plasma cells are a type of B- cell that directly bind antigens on target cells ✓ [Choose ] False True Binding of antigen to the cell surface of B-memory cells is a trigger for the secondary immune response Loss of MHC Class I expression would decrease the effectiveness of cytotoxic T-cell response [Choose ] [Choose ] [Choose ] >
Which of the following statements is correct? B cells only recognize antigen presented on MHC class II Dendritic cells are the only cells that can present antigen via both MHC class I and MHC class II CD8 + T cells recognize antigen presented on MHC class I B cells can present antigen via MHC class II for T cells The B cell receptor is a membrane-bound antibody Isotype switch leads to the B cell's antibodies being able to recognize a new antigen The T cell receptor recognizes peptides bound to MHC Main function of CD8 + T cells
Match the term with its complement. T-cell receptor 8-chain gene CD3 complex CD8 CD4 beta-2 microglobulin Drag answer here Drag answer here Drag answer here Drag answer here Drag answer here positioned in the T-cell receptor a-chain locus between Va and Ja gene segments has four extracellular Ig-like domains noncovalently complexed with the MHC class I alpha chain made up of y, 8 and e components binds to the alpha 3 domain of MHC Class I
Which of the following statement is TRUE about effector cells? (Select all that apply) Effector cells are created once adaptive immune cells are activated B cell effector cells are called plasma cells T cell effector cells are called memory cells T cell effector cells are the same, regardless of surface cell receptor Each immune response cell has its own effector cell Effector cells arise from differentiation
Match these lymphocytes to their specific functions Cytotoxic T-cells [ Choose ] Aid other types of lymphocytes Part of general immunity Reduce response time to subsequent exposures Produce immunoglobulins - antibodies Physically destroy the cells Helper T-cells Plasma cells [ Choose ] Memory T-cells [Choose] Natural killer cells [Choose]
Choose 1 or more than 1 CD8 T lymphocytes: are generated from lymphoid progenitors in secondary lymphoid organs. help B lymphocytes to differentiate into plasma cells. recognize antigens through specific cell surface receptors. can be helped by CD4+ T lymphocytes to differentiate into cytotoxic T lymphocytes. are involved in the defense against intracellular pathogens.
Which two events are required to activate a cytotoxic T cell? There is more than one answer. O Class II MHC molecules present extracellular antigen for binding on a complementary cytotoxic T cell receptor. O IL-4 is released by a TH1 cell to be bound by a cytotoxic T cell. O Class I MHC molecules presents intracellular antigen for binding on a complementary cytotoxic T cell receptor O IL-2 is released by a TH1 cell to be bound by a cytotoxic T cell.