Research Article

Presence of CRISPR CAS-Like Sequences as a Proposed Mechanism for Horizontal Genetic Exchanges between Trichomonas vaginalis and Its Associated Virus: A Comparative Genomic Analysis with the First Report of a Putative CRISPR CAS Structures in Eukaryotic Cells

Figure 4

Proposed mechanism of CRISPR/Cas immunity to invader agents (viruses). The CRISPR/Cas system provides immunity to virus, and its main features can be described by three distinct stages: (1) acquisition, (2) processing, and (3) interference.