Question

Match the following of column I with that of column II.

Column I	Column II
i. α - interferons	p. natural killer cells
ii. β - interferons	q. leucocytes (B and T cells)
iii. γ - interferons	r. fibroblast

• A. i - p, ii – q, iii – r
• B. i – q, ii – r, iii – p
• C. i – p, ii – r, iii – q
• D. i – q, ii – p, iii – r

Answer 1

The correct option is B i – q, ii – r, iii – p

Interferons are low molecular weight proteins synthesized by host cells in response to viral attack.

α – interferons are produced when virus infects the leukocyte- cells (both B and T cells), while β – interferons are released from virus-infected fibroblasts. Natural killer cells play an important role in immune response by producing γ – interferons. This chemical is an important component involved in the differentiation of Helper T – cells.

Recent research has shown that interferons are produced in response to certain protozoans and rickettsia (viral RNA, viral glycoproteins, and bacterial endotoxins).