Question

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): Tuberculin and Johnin tests are serological tests employed for diagnosis of Bovine Tuberculosis and Paratuberculosis, respectively.
Reason (R): Both the tuberculin and Johnin tests are based on antigen-antibody complex mediated type 3 hypersensitivity reaction.
In light of the above statements, choose the correct answer from the options given below:

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
• C. (A) is true but (R) is false.
• D. (A) is false and (R) is also false.

Hint:

Remember that mycobacterial skin tests (tuberculin and Johnin) are classic examples of in vivo cellular immunity assays based on Type IV (delayed) hypersensitivity. They do not involve antibodies or serum (serology).

Answer 1

The Correct Option is D