What is recombinant vaccine?

Explanation

A recombinant vaccine is produced by applying recombination DNA technology is called recombinant vaccine . It involves the insertion of DNA encoding antigen (like bacterial surface protein) that can stimulate immune response in host cell and expresses the antigen . This antigen is then isolated , puriified and cloned to high number and later processed .
Recombination vaccine can be
Subunit recombinant vaccine , i.e., components of pathogenic organisms .
Attenuated recombinant vaccines , i.e, the genetically modified but weakened pathogenic agents .
Vector recombinant vaccines , i.e., genetically modified viral vectors .