Question

Read the following matching carefully:
$\left(i\right)$ Artificial active immunity: Vaccination
$\left(ii\right)$ Natural passive immunity: Anti-tetanus serum $\left(\text{ATS}\right)$
$\left(iii\right)$ First line of defense : Physical barriers
$\left(iv\right)$ Anamnestic responses: Quick and highly intensified response
$\left(v\right)$ Graft rejection: Due to cell-mediated immunity $\left(\right.\text{CMI}\left.\right)$
How many from the above matchings are correct?

• A. Five
• B. Four
• C. Three
• D. Two

Answer 1

Answer: (B)

Anti-tetanus serum is an example of artificial passive immunity, which contains preformed antibodies. First line of defense includes skin, which comes in physical barrier of innate immunity. Secondary immune responses are also called anamnestic responses, which are very quick and highly intensified due to presence of memory cells.