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Immunity

Immunity

(1) A 14 years old girl while sitting in the garden suddenly start sneezing and develop running nose. Her symtomps were due to pollen allergy (type I hypersensitivity). The pollen antigens are presented to the immune effector cells by which of the following antigen presenting cells in her nasal mucosa:

(2) A research scientist took pancreatic biopsies of type I diabetic rats. He showed that reduced insulin secretion in type I diabetes is because of destrucion of insulin secreting cell by specialized cell immune effector cells. Which of the following inflammatory cells are involved in this type of hypersensitivity reaction:

(3) All of the following are cells of immune system and play a major role in immune response EXCEPT:

(4) A 32 years old woman presented with severe weakness of her lower limb muscles. She was diagnosed as a case of myasthenia gravis (autoantibodies disease). She had circulating acetylecholine receptor autoantibodies because of defective T cell deletion. In which of the following organs the mechanism of deletion should have occured:

(5) The ability to live in harmony with our own immune system is called:

(6) An 8-year-old boy presents with periorbital edema and dark colored urine. Urin alysis shows 3+ hematuria. His parents report that the boy had a streptococcal throat infection 2 weeks ago. A renal biopsy shows features of glomerulonephritis. Which of the following best explains the pathogenesis of glomerulonephritis in this patient:

(7) Rh- hemolytic disease of the newborn is an example of:

(8) A 35 year old man consults a physician for seasonal eye itching and runny nose. Recurrent conjunctivitis in this patient is most likely caused by which of the following mechanisms of disease:

(9) Regarding adaptive immunity which statement is correct:

(10) Regarding immunological tolerance which of the following statement is True:

(11) Which one of the following sets of cells can present antigen to helper T cells:

(12) A deficiency of which one of the following complement components predisposes to bacteremia caused by members of the genus Neisseria:

(13) Of the following diseases, which one is most likely to be caused by a delayed hypersensitivity reaction:

(14) Regarding the primary and secondary (anamnestic) immune response, which one of the following is most accurate:

(15) Cell-mediated immunity is the main host defense against which one of the following organisms:

(16) A 45 years old man, known case of Tuberculosis for the last 5 years, presented with declining renal function. His renal biopsy showed presence of homogenous pink deposits in the glomeruli. These deposits were positive for congo red stain and gave apple green birefringence under polarized light. What is the diagnosis:

(17) A 35 years old man presented with a skin tumor on his left leg. Biopsy showed it to be a slow growing malignant vasular tumor. The doctor suspected AIDS. Which vascular neoplasm is specifically releated to AIDS virus:

(18) A 45 years old man was diagnosed with chronic renal faliure. He was advised renal transplant. His brother donated him a kidney. Under which of the catagories will this renal graft be included:

(19) A pathologist labeled a case as chronic Granulomatous Inflammation. He based his diagnosis on the presense of collection of epitheloid cells, fibroblast giant cells and lymphocytes. What inflammatory mediators are responsible for constant recruitment of Lymohocytes and macrophages to the site of injury:

(20) A 43 years old man presented with weakness of legs. He was diagnosed as a case of Myasthenia Gravis. What is the mechanism of disease in this type of hypersensitivity reaction:

(21) Reagrding interlukins, which one of the following is most accurate:

(22) Regarding the graft -versus- host reaction, which one of the following is most accurate:

(23) Regarding the pathogenesis of autoimmune diseases, which one of the following is most accurate:

(24) Regarding immunodeficiency diseases, which one of the following is most accurate:

(25) Redarding innate immunity which one of the following statement is correct:

(26) Which antibodies can fix the complement:

(27) Humoral immunity:

(28) Which one of the following is an attribute of the innate, rather than the adaptive (acquired) arm of our host defenses:

(29) Regarding antibody-mediated immunity and cell mediated immunity which one of the following is the most accurate:

(30) Which one of the following is an attribute of innate host defenses:

(31) Regarding the function of different classes of antibodies, which one of the following statement is the most accurate:

(32) A young man came to his doctor with the episode of eye tearing and runny nose, his doctor refer the patient to an allergist who performs skin tests with various allergens. A wheal and flare reaction is seen on the patient back at the site where several pollens were injected. What is the most likely sequence of events that produced the wheal and flare reaction:

(33) Regarding the pathogenesis of autoimmune disease which one of the following is the most accurate:

(34) Which one of the following cells has both characteristics i.e specificity to microbes and to exhibit memory of having responded to particular microbe previously: