Name a recombinant vaccine that is currently being used in vaccination program.
Hepatitis $B$ recombinant vaccine-engerix is used for vaccination of hepatitis virus.
Some people who have suffered from a disease may not be affected again during their life time; such immunity is called
The term ’active immunity' means
Draw a well-labelled diagram of an antibody molecule.
The thymus is a lobed organ located near the $…A…$ and beneath the $…B… $ The most appropriate combination for $\mathrm{A}$ and $\mathrm{B}$ is
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