Tuesday, 2 June 2015

Antigen Antibody Reaction

Antigen Antibody Reaction

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VDRL test is an example of___________.

a. Tube test
b. Ring test
c. Slide test
d. none of these

Weil-Felix reaction is based on sharing of antigens between___________.

a. sheep RBCs and EB virus
b. mycoplasma and human O group RBCs
c. rickettsial antigens and antigens of certain strains of Proteus
d. none of these

Agglutination reaction is more sensitive than precipitation for the detection of___________.

a. antigens
b. antibodies
c. complement
d. antigen-antibody complexes

Precipitation reaction is relatively less sensitive for the detection of___________.

a. antigens
b. antigen-antibody complexes
c. antibodies
d. complement

In which of the following case a large lattice is formed?

a. Antibody is in excess
b. Antigens and antibodies are in optimal proportion
c. Antigen is in excess
d. None of these

Ring test is used for___________.

a. C-reactive protein test
b. Ascoli's thermoprecipitation test
c. typing of streptococci and pneumococci
d. all of the above

Precipitation reaction can be converted into agglutination reaction by coating soluble antigen onto___________.

a. bentonite particles
b. RBCs
c. latex particles
d. all of these

Commercially available ELISA kits are used for the detection of___________.

a. rotavirus
b. hepatitis B surface antigen
c. anti-HIV antibodies
d. all of these

Monoclonal antibody production requires___________.

a. mouse splenic lymphocytes
b. mouse myeloma cells
c. both (a) and (b)
d. none of these

Quellung reaction is used for typing of___________.

a. Klebsiella pneumoniae
b. Streptococcus pneumoniae
c. Both (a) and (b)
d. None of these

Fluorescent treponemal antibody test is an example of___________.

a. indirect immunofluorescence
b. direct immunofluorescence
c. both (a) and (b)
d. none of these

Counter-immunoelectrophoresis is used for the detection of___________.

a. Meningococcal antigen
b. Hepatitis B surface antigen
c. Alpha-fetoprotein
d. All of these

The test (s) based on the principle of toxin neutralization is/are___________.

a. Nagler's reaction
b. Schick test
c. both (a) and (b)
d. none of these

Slide agglutination reaction is/are useful for the identification of the culture(s) of___________.

a. Shigella
b. Vibrio cholerae
c. Salmonella
d. All of these

Amount of various immunoglobulin classes can be measured by___________.

a. double diffusion in one dimension
b. single diffusion in two dimensions
c. single diffusion in one dimension
d. double diffusion in two dimensions
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