Immune Response

Which cellular effect is attributed to silica particles, beryllium sulphate and endotoxins as adjuvants?

What is the usual outcome of antigen presentation by non-professional antigen-presenting cells?

Why is Freund’s complete adjuvant unsuitable for human use?

Which antigen can elicit antibody production without T-cell participation?

What is the first step in the immune response involving antigen-processing cells?

Which pattern describes the effects of therapeutic corticosteroid doses on immune responses in humans?

How does incorporation of protein antigens into the water phase of a water-in-oil emulsion prolong the antigenic stimulus?

An immunosuppressive drug selectively inhibits helper T-cell activity without being cytotoxic to lymphocytes or having antimitotic activity. Which drug fits this description?

What do cytotoxic T cells do after recognising target-cell antigens associated with MHC Class I molecules?

Which MHC class is associated with antigen presentation to helper T cells?

What is the antibody preparation directed against thymus cells called?

How do antimetabolites inhibit the cell division and differentiation required for humoral and cellular immune responses?

For how long may pneumococcal polysaccharide persist in humans after a single injection?

Which component accounts for the adjuvant effect of Gram-negative bacilli?

What determines differences in immune response to the same antigen among different individuals of a species?

In guinea pigs, tuberculoprotein administered before BCG immunisation inhibits delayed hypersensitivity to tuberculin while preserving circulating antibody production. What is this phenomenon called?

Which step of antibody production comprises antigen entry, distribution and fate in tissues, and contact with appropriate immunocompetent cells?

Which cell produces the interleukin-1 signal described in the immune response?

For certain antigens that induce tolerance at both high and low doses, what response is produced by intermediate doses?

An indurated skin nodule with mononuclear cell infiltration develops 48–72 hours after antigen administration. Which immune response does this represent?

Which process characterises an efferent block in immunological tolerance?

Which activities constitute the central functions of antibody production?

Which intervention can prolong the duration of immunological tolerance?

Which antigen administration pattern generally induces T cell tolerance?

Which material from sensitised donors was used to passively transfer delayed hypersensitivity in guinea pigs?

Following cytokine stimulation, B cells that have combined with their respective antigens clonally proliferate and differentiate into which cells?

Which pair serves as effector cells in cell-mediated immunity?

Which interferon is produced by fibroblasts?

T cells stimulated by antigens, mitogens or exposure to IL-2 produce which interferon?

Which comparison of antibody appearance after primary antigenic stimulation is supported by the source?

Which cells release the biologically active substances defined as cytokines in this description?

Which event during immune elimination may cause tissue damage associated with serum sickness?

A person develops an antibody response after a subsequent stimulus with the same antigen. What is this response called?

After an antigen-presenting cell engulfs an antigen, where is the antigen degraded into fragments before presentation within a class II histocompatibility molecule?

Why can polysaccharide antigens persist for months or years while protein antigens are generally eliminated within days or weeks?

A viral protein generated within an infected cell is processed by cytosolic proteasomes. Through which molecule is the resulting peptide displayed, and which T cells recognise it?

Which statement correctly describes the relationship between humoral and cellular immune responses?

Why were mediators previously named for their demonstrated biological effects grouped under the term cytokines?

Cytotoxic CD8 T cells are activated by contact with antigen presented along with which molecules?

Increasing an antigen dose beyond a certain level inhibits the antibody response and induces tolerance. What is this phenomenon called?