Match List-I with List-II.

	List-I		List-II
(A)	Cytokine barriers	(I)	Mucus coating of respiratory tract
(B)	Cellular barriers	(II)	Interferons
(C)	Physiological barriers	(III)	Neutrophils and Macrophages
(D)	Physical barriers	(IV)	Tears and Saliva

Choose the correct answer from the options given below.

	(A)	(B)	(C)	(D)
(1)	II	III	IV	I
(2)	III	I	IV	II
(3)	III	I	II	IV
(4)	II	III	I	IV

A-II, B-III, C-IV, D-I
A. Cytokines are signaling molecules that regulate immune responses. Interleukins and interferons are cytokines.
B. Neutrophils and macrophages are examples of cellular barriers of innate immunity.
C. Tears and saliva contain the enzyme lysozyme that provides a physiological barrier to protect the body from
Bacterial infections.
D. Mucus coating the digestive, respiratory and urinogenital tract acts as a physical barrier by preventing the entry of pathogens.