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- Which of the following is not a part of innate immunity? a. phagocytic cells e. inflammation b. fever f. complement activation c. histamines g. presenting antigen d. cytokines h. all take partThe Adaptive Immune Response Is a Specific Defense Against Infection Identify the components of cellular immunity, and define their roles in the immune response.The binding groove of endothelial protein C receptor (EPCR) binds to _____ and presents them to _____. a. phosphoantigens; Vγ9:Vδ2 T cells b. MIC-A or MIC-B proteins; NK cells c. sulfatides; Vγ:Vδ1 T cells d. phospholipids; Vγ4:Vδ5 T cells e. lipid antigens; Vα24–Jα18:Vβ11 NKT cells.
- T cells that secrete cytokines that help antibodyresponses are called ________.a. Th1b. Th2c. regulatory T cellsd. thymocytesWhen a helper T cell releases interleukin-1 to stimulate other leukocytes during antigen presentation, interleukin-1 is acting as a(n):When a helper T cell releases interleukin-1 to stimulate surrounding leukocytes, interleukin-1 is acting as: A. paracrine B. neurotransmitter C. autocrine
- CD1-restricted α:β T cells respond to lipid antigens of mycobacterial pathogens using all except which of the following? a. CD1a b. CD1b c. CD1c d. CD1d.In humans, B cells mature in the and T cells mature in the.a. GALT, liver b. bursa, thymus c. bone marrow, thymus d. lymph nodes, spleenTo activate your adaptive defense immune system, you must be: Select one: a. Exposed to the infectious agent b. Old enough for your thymus to be fully developed (T-cell maturation) c. Breastfed as an infant d. None of these are correct e. All of these are correct
- Helper T cells can be activated by macrophages(which engulf everything indiscriminately) or by B cells (which only engulf antigens that stick to their receptors). A. What properties so macrophages and B cells have ibn common that allows them both to activate T cells? B. It has been suggested that macrophages probably do most to fhte T cell activating in the primary response but B cells do most of it in the secondary response. Why does this make sense?Which of the following cell types is important innonspecific responses to infection?a. natural killer cellb. cytotoxic T cellc. B celld. regulatory T cellTo become a fully activated, antibody-secreting cell, B cells usually need: a. to encounter an antigen or receive a signal delivered by a helper T cell. b. to ingest a foreign invader such as a microobe. c. activation by a plasma cell d. contact with an antigen and helper T cell cytokines