... be efficiently packaged into adeno-associated viruses (AAVs) . Other natural Cas orthologs include Hsp1Cas9...editing method in which Moloney Murine Leukemia Virus Reverse Transcriptase (M-MLV RT) is fused to the...H840A nickase and M-MLV RT (Moloney Murine Leukemia Virus Reverse Transcriptase) for "search and replace" ...need to generate lentivirus containing the entire library (Figure 8D). This lentivirus will then be used...delivery to cells that are poorly transduced by lentivirus. Non-mammalian CRISPR libraries are also available...as liquid DNA, or in select cases, as pre-made lentivirus . DNA libraries are shipped at a concentration...need to either co-infect with a Cas9-producing lentivirus or use a Cas9-expressing stable cell line. After...