Which one of the following is known as cytokine barriers?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Interferons
Option (1) Skin of our body — Incorrect. The skin is a physical barrier that stops microbes from entering.
Option (2) Acid in our stomach — Incorrect. Stomach acid is a physiological barrier, like saliva and tears.
Option (3) Leucocytes of our body — Incorrect. White blood cells that eat microbes form the cellular barrier.
Option (4) Interferons — Correct. Virus-infected cells secrete these proteins, which protect non-infected cells from further viral infection.
NCERT Extract:
Innate Immunity – …
