Type III hypersensitivity reactions are a result of which of these?
A)Antibodies coating mast cells by binding to receptors that signal its degranulation, followed by the discharge of preformed mediators
B)Antibodies binding to soluble antigens that were released into body fluids and the immune complexes being deposited in the tissues
C)Tc cells or lymphokine-producing Th1 cells directly attacking and destroying cellular targets
D)Antibodies binding to the antigen on the cell surface

Question

Quizplus · Accepted Answer

Antigen-antibody (immune) complexes that are formed in the circulation and then deposited later in vessel walls or extravascular tissues cause most type III hypersensitivity diseases. Type III hypersensitivity reactions are not the result of antibodies coating mast cells to signal their degranulation, immune cells directly attacking and destroying targets, or antibodies binding to the antigen on the cell surface.

Type III Hypersensitivity Reactions Are a Result of Which of These