english: When a virus invades a bacterium, Cas proteins cut out a segment  of the viral DNA to stitch into the bacterium’s  CRISPR region, capturing a chemical snapshot  of the infection.
non_english: Kada virus napadne bakteriju, kas proteini odsecaju segment virusne DNK i ubacuju ga u deo bakterije gde je Krispr, pamteći hemijski snimak infekcije.