Screenshots of the CRISPRs web-service. 1. The opening page of the prokaryotic strains: strains in pink have at least one CRISPR, strains in grey have only questionable CRISPRs and strains in yellow have no CRISPR. 2. General information on the CRISPR clusters and their location. 3. Detailed information on the clusters: DRs are in yellow, spacers are in random colours. 4. Link to the spacers fasta file.