Immunology - Exam 3 - Practice Questions COPY Flashcards

C. immediate hypersensitivity

A. anaphylaxis

D. Type II hypersensitivity reactions.

A. Type I hypersensitivity reaction

E. Type IV, mediated by CD4+ T cells

C. Type III, mediated by IgG antibodies.

B. Type II, mediated by IgG or IgM antibodies

B. delayed-type hypersensitivity.

A. Completion of the classical pathway to the splitting of C3

B. Corticosteroids

C. Switch recombination mediated by activation-induced cytidine deaminase.

C. L-selectins

C. Cytotoxic T lymphocytes

D. Type IV hypersensitivity

C. Reduced follicles and germinal centers

D. Macrophages

D. Immediate hypersensitivity is driven by cytokines such as interleukin (IL)-4, IL-5, and IL-13.

B. DiGeorge syndrome with developmental defects in the thymus.

C. CD19
Decrease in B cells, which should express CD19.

C. Activated CD4+ and CD8+ T cells

D. NK-cells are part of the innate immune system

C. CTLA-4 on T-cells competes with CD28 for binding to B7 on B-cells

D. T-cells with strong affinity to autologous peptide: MHC complexes

C. By tagging the tumor cells for destruction mediated by the complement system and/or by inducing antibody-dependent cell-mediated cytotoxicity.

E. Repeated injury and the following inflammation can cause autoimmunity.

A. Signal 1 from antigen through the B cell receptor and signal 2 from activated CD4 T-cells.













































































































