Cas13, after recognizing RNA, cleaves any other RNA in the bacterial cell, acting as an altruistic system to shut down infected cells.

“unlike C 9 it not only cleaves the recognized RNA but once it recognizes piece of RNA it also turns on almost a suicidal function it goes and Cleaves any other RNA that's in the bacterial cell and so in the infection cycle um you can think of this as a altruistic um sort of uh uh system where um when a when when the CER te recognizes um my my my cell has been infected by RNA virus I'm going to shut myself down kill the cell and save the population”