Question

"Everything is true about the Granulomatous hypersensitivity, except; Select all that apply" a. Primary defense against intracellular infections b. Represents a chronic type VI hypersensitivity reaction c. Protective defense reaction that eventually causes tissue destruction d. Antigen is destroyed within the macrophages. e. All of the above is correct

My subject is Pathophysiology and I cannot go onto the next question without aswering this one firts. It will not let me go back

Answer 1

Type IV hypersensitivity is cell-mediated response when the T cell get in contact with antigens, here no antibodies are involved.T-cell involved here are developed from the memory cells from the prior interaction with the same antigen.After coming in contact with antigen T -cell release the cytokines , which activate macrophages and phagocytes, which carry out cell mediated immune response and destroy the antigen.As the memory cells against the antigen is formed before the response is a secondary immune response.Thus B ,C and D are true here.A is not true