Type II hypersensitivity is mediated by –
Correct Answer: Antibody mediated
Description: Antibody mediated
Type I reactions (immediate hypersensitivity) → Involve immunoglobulin ‘E’(Ig E) mediated release of Histamin and other mediators from mast cells and basophils.
Type II reactions (Antibody mediated) → Involve immunoglobulin Gor Immunoglobulin Mbound to cell surfac antigen, with subsequent complement fixation.
Type III reactions (Immune complex mediated) → involve circulating antigen-antibody complexes that deposit ii postcapillary venules, with subsequent complement fixation.
Type IV reactions (delayed hvpersensititv. cell mediated) → Mediated by Tcells.
Category:
Pathology
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