CRISPR

CRISPR is used in genome editing technology.
CRISPR systems capture genetic fragments of prior infections and use these memories to direct Cas proteins to fight against subsequent infections. [ Mamm. 18 ]
The functions of CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) and CRISPR-associated (Cas) genes are essential in adaptive immunity in select bacteria and archaea, enabling the organisms to respond to and eliminate invading genetic material. [ Reis 18 ]
See: DNA editing.