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Home Microbiology Antigen Antibody Reaction Comments

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


  • Options
  • A. Antibody is in excess
  • B. Antigens and antibodies are in optimal proportion
  • C. Antigen is in excess
  • D. None of these

  • Correct Answer
  • Antigens and antibodies are in optimal proportion 


  • Antigen Antibody Reaction problems


    Search Results


    • 1. Ring test is used for

    • Options
    • A. C-reactive protein test
    • B. Ascoli's thermoprecipitation test
    • C. typing of streptococci and pneumococci
    • D. all of the above
    • Discuss
    • 2. Counter-immunoelectrophoresis is used for the detection of

    • Options
    • A. Meningococcal antigen
    • B. Hepatitis B surface antigen
    • C. Alpha-fetoprotein
    • D. All of these
    • Discuss
    • 3. Slide agglutination reaction is/are useful for the identification of the culture(s) of

    • Options
    • A. Shigella
    • B. Vibrio cholerae
    • C. Salmonella
    • D. All of these
    • Discuss
    • 4. Cytotoxic T-cells can be recognized by which of the following cell surface marker?

    • Options
    • A. CD4
    • B. CD7
    • C. CD8
    • D. CD9
    • Discuss
    • 5. Which of the following statements is false regarding B cells?

    • Options
    • A. B cells can undergo class switching and produce a different antibody type
    • B. B one marrow stem cells migrate to the thymus and develop into B cells
    • C. B cells synthesize antibodies and put them on their cell surface
    • D. B cells that recognize high concentrations of antigens (self) in the absence of other signals undergo apoptosis in the bone marrow
    • Discuss
    • 6. Precipitation reaction is relatively less sensitive for the detection of

    • Options
    • A. antigens
    • B. antigen-antibody complexes
    • C. antibodies
    • D. complement
    • Discuss
    • 7. VDRL test is an example of

    • Options
    • A. Tube test
    • B. Ring test
    • C. Slide test
    • D. none of these
    • Discuss
    • 8. Weil-Felix reaction is based on sharing of antigens between

    • Options
    • 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
    • Discuss
    • 9. Agglutination reaction is more sensitive than precipitation for the detection of

    • Options
    • A. antigens
    • B. antibodies
    • C. complement
    • D. antigen-antibody complexes
    • Discuss
    • 10. Precipitation reaction can be converted into agglutination reaction by coating soluble antigen onto

    • Options
    • A. bentonite particles
    • B. RBCs
    • C. latex particles
    • D. all of these
    • Discuss


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