In what ways do type IV hypersensitivity reactions differ from other types of hypersensitivity reactions?
A)Unlike other types of hypersensitivity reactions, type IV reactions are antibody-mediated responses and develop almost immediately.
B)Unlike other types of hypersensitivity reactions, type IV reactions are cell-mediated responses and develop almost immediately.
C)Unlike other types of hypersensitivity reactions, type IV reactions are antibody-mediated responses and take 24 hours or more to develop.
D)Unlike other types of hypersensitivity reactions, type IV reactions are cell-mediated responses and take 24 hours or more to develop.

Question

Quizplus · Accepted Answer

A)Type IV reactions differ from other hypersensitivity responses in two ways. First, they are cell-mediated immune responses, not antibody-mediated responses, that involve the T cells of the immune system. Second, type IV reactions are delayed rather than immediate, developing 24-48 hours after exposure to an antigen.
B)Type IV reactions differ from other hypersensitivity responses in two ways. First, they are cell-mediated immune responses, not antibody-mediated responses, that involve the T cells of the immune system. Second, type IV reactions are delayed rather than immediate, developing 24-48 hours after exposure to an antigen.
C)Type IV reactions differ from other hypersensitivity responses in two ways. First, they are cell-mediated immune responses, not antibody-mediated responses, that involve the T cells of the immune system. Second, type IV reactions are delayed rather than immediate, developing 24-48 hours after exposure to an antigen.
D)Type IV reactions differ from other hypersensitivity responses in two ways. First, they are cell-mediated immune responses, not antibody-mediated responses, that involve the T cells of the immune system. Second, type IV reactions are delayed rather than immediate, developing 24-48 hours after exposure to an antigen.

In What Ways Do Type IV Hypersensitivity Reactions Differ from Other