Which of the following is an example of a cytokine barrier?

Interferons

The correct answer is Option (1) -Interferons

Cytokines are small proteins that play a crucial role in cell signaling during immune responses. They act as mediators and regulators of immune and inflammatory processes. Among the options provided, interferons are the most suitable example of a cytokine barrier.

Interferons are a type of cytokine produced by cells in response to viral infections or other pathogens. They help to inhibit the replication of viruses, stimulate immune cells, and enhance the overall immune response. By releasing interferons, the body establishes a barrier against viral infections and helps to limit the spread of viruses to other cells.

T-lymphocytes and B-lymphocytes are types of immune cells that are involved in adaptive immune responses, but they do not specifically represent cytokine barriers. TH cells, or T-helper cells, are a specific type of T-lymphocyte that play a central role in coordinating immune responses, but they are not directly associated with cytokine barriers.

Therefore, the correct answer is (1) Interferons as they are a suitable example of cytokine barriers.