A client with a long history of "hay fever" has recently begun a series of immunotherapy (allergy shots). This treatment potentially will achieve a therapeutic effect by:
A) Blocking cytokine release from sensitized mast cells
B) Preventing mast cells from becoming sensitized
C) Causing T cells to be sequestered in the thymus for longer periods
D) Stimulating production of IgG to combine with antigens
Ans: D
Feedback:
In immunotherapy, injected antigens stimulate production of high levels of IgG, which acts as a blocking antibody by combining with the antigen before it can combine with the cell-bound IgE antibodies. This therapy does not block cytokine release, prevent mast cell sensitization, or change the maturation process of T cells.
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