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- The autoimmune attack on nAChR leads to a decrease in the number of available receptors due to antibodies binding to the receptors. 2. Where could you find these antibodies binding? Choose ALL that apply. a. effectors of the parasympathetic nervous system b. effectors of the somatic nervous system c. effectors of the sympathetic nervous system d. pre-ganglionic neurons of the parasympathetic nervous system e. pre-ganglionic neurons of the sympathetic nervous system f. post-ganglionic neurons of the parasympathetic nervous system g. post-ganglionic neurons of the sympathetic nervous system PLEASE EXPLAIN YOUR REASONING!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 binds to the Fc portion of the antibody? A. C1q B. C2a C. C1r D. C1s E. C2b
- Why HIV doesn’t naturally induce a strong CD8+ T cell response? (Select all that apply if more than one option is correct.) a. The virus is not recognized by BCRs b. HIV antigens cannot be presented on MHC II c. HIV antigens cannot be presented on MHC I d. HIV does not readily infect non-T cells e. HIV cannot interact with CD8 2. Explain the previous question by select all the correct following options. How are CD8+ T cell responses against HIV induced? HIV antigens need to be ______. a. presented to CD8 T cells by B cells b. cross-presented c. presented to CD8 T cells by unnifected DCs d. delivered as a vaccineThe photomicrograph shows a section of synovium from the knee joint of a patient with rheumatoid arthritis (RA). Which of the following are the most abundant cells in the inflammatory infiltrate? A. Eosinophils B. Langhans type giant cells C. Lymphocytes and plasma cells D. Neutrophils E. Type A and B synovial cells44) Concerning the functions of macrophages, which of the following statements is CORRECT: a. Macrophages can phagocytose pathogens and produce antibodies b. Macrophages can help T cells to stimulate complement c. Macrophages can phagocytose pathogens and are antigen presentation cells d. Macrophages activate the clotting cascade e. None of the above
- V:OYIO A O ۳۱ آذار، ۲۰۲۱ -> B. Gluten. D. Gastric H+-K+ dependent ATPase. O E. Myelin basic protein. 1. Which of the following 5 points antibodies are of most use for the diagnosis of pernicious anemia: * D. Anti-IgG Fc C. Anti-nuclear. A. Anti-parietal cell. E. Anti-TSH receptor. B. Anti-thyroid peroxidase. 3. The best test for diagnosis 5 points of Type B Gastritis is: * المزید حذف تعديل المفضلة مشاركة1. Match the following leukocytes (A-L) with the correct description (a-j). Each term should be used only once or it should not be used at all. (b) (c) (d) (e) (f) A. Mast cells B. Neutrophils C. Macrophages D. Eosinophils E. Monocytes F. Dendritic cells G. B cells H. Helper T cells I. Cytotoxic T cells J. Basophils K. Plasma cells L. Natural killer cells can perform phagocytosis and they are the most abundant type of leukocytes in the blood. are found in various tissues and release histamine and other chemicals involved in inflammation. are cytotoxic cells used for the killing of parasites are transformed into macrophages when they enter tissues. are antibody-producing cells. belong to the specific immune system and can kill virus-infected cells and cancer cells. have receptors consisting of two heavy chains and two light chains _can kill pathogens by phagocytosis and present peptide antigen fragments on MHC molecules. are found in the blood and are involved in allergic reactions. are…The T lymphocytes as macrophages, secrete a number of polypeptides (cytokines) generally called lymphokines that serve as autocrine regulators of the immune system.a. Identify any five (5) lymphokines and explain their functions.b. Briefly state a function for each of the following immune cells. Monocytes Mast Cells B Lymphocytes Cytotoxic, T Lymphocytes Helper T Lymphocytes
- Plasma proteins that are late acute phase reactants include all the following except? a. haptoglobin b. ceruloplasmin c. complement C3, C4 d. transthyretinWhich ONE of the following flow cytometry results is most likely in a patient with chronic lymphocytic leukaemia? Select one: A.CD11c+, CD25+, CD103+ B.CD5+, CD19+, CD20+ (dim) C.Surface immunoglobulin+, CD5+, cyclin D1+ D.CD10+, CD20+, FMC7+The following are characteristics of DCs in peripheral tissues EXCEPT ____________________. A Peripheral tissue DCs have an immature phenotype. B Peripheral tissue DCs are unable to take up and process antigen. C Peripheral tissue DCs lack co-stimulatory B7 molecules. D Peripheral tissue DCs actively phagocytize antigens. E Peripheral tissue DCs express low levels of MHC molecules.