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Home Microbiology Antigen Antibody Reaction Comments

  • Question
  • Counter-immunoelectrophoresis is used for the detection of


  • Options
  • A. Meningococcal antigen
  • B. Hepatitis B surface antigen
  • C. Alpha-fetoprotein
  • D. All of these

  • Correct Answer
  • All of these 


  • Antigen Antibody Reaction problems


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    • 1. 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
    • 2. Cytotoxic T-cells can be recognized by which of the following cell surface marker?

    • Options
    • A. CD4
    • B. CD7
    • C. CD8
    • D. CD9
    • Discuss
    • 3. 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
    • 4. Chemically an antigen may be

    • Options
    • A. lipid
    • B. protein
    • C. polysaccharide
    • D. any of these
    • Discuss
    • 5. Lysozyme is present in

    • Options
    • A. sweat
    • B. Cerebro spinal fluid (CSF)
    • C. urine
    • D. saliva
    • Discuss
    • 6. 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
    • 7. 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
    • Discuss
    • 8. Precipitation reaction is relatively less sensitive for the detection of

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

    • Options
    • A. Tube test
    • B. Ring test
    • C. Slide test
    • D. none of these
    • Discuss
    • 10. 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


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