Name a recombinant vaccine that is currently being used in vaccination program.
Hepatitis $B$ recombinant vaccine-engerix is used for vaccination of hepatitis virus.
In the figure, structure of an antibody molecule is shown. Name the parts $A,\,B$ and $C$. Show $A,\,B$ and $C$ in the diagram.
Consider the following statements
$I.$ People should get vaccination to avoid infection
$II.$ Vaccination is available against polio, cholera, typhoid, tuberculosis and many othe disease
$III.$ Eradication of vectors are necessary in diseases like malaria and filariasis
$IV. $ Dengue and chikengunya, both are spread by Culex mosquitoes
Which of the statements given above are correct?
Give scientific reasons : Virus infected cells provide innate immunity to other cells.
The principle function of the lymph node in the man is
Definitions / Explanation : $B$-lymphocytes & $T$-lymphocytes
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