A. Increase toxigenicity
B. Increase antigenicity
C. Reduce the antigenicity
D. reduce the toxigenicity
Related Mcqs:
- The interaction of antigens with antibodies on the surface of a mast cel leads to degranulation and anaphylaxis. The mast cell granules produce anaphylaxis because they contain________________?
A. Lysosomes
B. Proteolytic enzymes
C. Lymphotoxins
D. Vasoactive mediators - CD4 cells recognize the antigens in association with_____________?
A. MHC I
B. MHC II
C. MHC III
D. B-cell receptor - A type of immediately occuring reaction in which antigens combine with antibodies already attached to the surface of mast cells and basophils is called_____________?
A. Type I hypersensitivity
B. Type II hypersensitivity
C. Type III hypersensitivity
D. Type IV hypersensitivity - Following reaction are produced by heterophil antigens except_____________?
A. Forssman antigen antibody reaction
B. Weil-Felix reaction
C. Paul bunnel reaction
D. Widal reaction - Same or closely related antigens present in different biological species are known as________________?
A. Suquestrated antigens
B. Isoantigens
C. Haptens
D. Heterophile antigens - Which one of the following does not present antigens ?
A. NK cells (Netural killer cells)
B. Dendritic cells
C. Langerhan’s cells
D. Macrophages - The term epitope refers to________________?
A. complete antigen molecule
B. Hapten
C. Immunogen
D. Smallest antigenic determinant - Rigor mortis results after death is due to________________?
A. Failure of acetylcholine to diffuse
B. Failure of ATP supply
C. Failure of break down of calcium bridges
D. None of the above - The dental amalgam is most resistant to________________?
A. Compressive stress
B. Impact stress
C. Shear stress
D. Tensile stress - Air bubbles formed on the surface of casting is probably due to________________?
A. Improper casting pressure
B. Improper heating of the investment
C. Improper angulation of sprue
D. Improper wetting of the wax pattern by the investment
