A Student Asks About the Mechanism That Results in Type

question 20

Multiple Choice

A student asks about the mechanism that results in type II hypersensitivity reactions. What description by the professor is best?

• A)Antibodies coat mast cells by binding to receptors that signal its degranulation, followed by a discharge of preformed mediators.
• B)Antibodies bind to soluble antigens that were released into body fluids, and the immune complexes are then deposited in the tissues.
• C)Cytotoxic T lymphocytes or lymphokine-producing helper T 1 cells directly attack and destroy cellular targets.
• D)Antibodies bind to the antigens on the cell surface.

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