Figure 3From: CRISPR loci reveal networks of gene exchange in archaeaA schematic phylogenetic tree of organisms that have contributed spacer sequences to archaea. The direction of arrows points from the spacer towards its match. Red arrows, within genus matches; purple arrow, between genera matches; black arrows- matches between families, classes or domains; blue arrows, the match is to a virus known to infect that species (not including provirus sequences within genomes of cellular organisms). Boxes denote number of spacer hits between two organisms, absence of a box denoting a single match. "@", "#" equal best hits. Within species matches are not shown.Back to article page