Explain the role of the following in providing defence against infecti

1.	Explain the role of the following in providing defence against infection in human body:(i) Histamines(ii) Interferons(iii) B-cells
Answer» (i) Histamines: These are chemicals which cause inflammatory responses. (ii) Interferons: These are glycoproteins which protect non-infected cells from further viral infection. (iii) B-cells: These produce proteins called antibodies in response to pathogens into the blood to fight with them.

Explain the role of the following in providing defence against infection in human body:(i) Histamines(ii) Interferons(iii) B-cells

Answer»

(i) Histamines: These are chemicals which cause inflammatory responses.

(ii) Interferons: These are glycoproteins which protect non-infected cells from further viral infection.

(iii) B-cells: These produce proteins called antibodies in response to pathogens into the blood to fight with them.