Mutations Causing Deficiencies in CD40L Expression Lead to an Inability

question 40

Multiple Choice

Mutations causing deficiencies in CD40L expression lead to an inability of helper T cells to:

• A) kill tumor cells, resulting in an increased risk of cancer.
• B) activate macrophages, resulting in an inability to clear extracellular pathogens.
• C) migrate to the site of an infection by chemotaxis, resulting in a slowed response.
• D) promote class-switching, resulting in high IgM and low IgA and IgG concentrations.

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Definitions:

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