Fig. 6
From: MetaCarvel: linking assembly graph motifs to biological variants

The impact of repeat detection and variant discovery on the scaffolding graph. a A scaffolding graph containing a four-node bubble (highlighted by a box) and a repeat (node shaded black). b After the removal of the repeat, the graph becomes disconnected, simplifying the discovery of variants (the collapsed four-node bubble is shown as an elongated hexagon) and simple chains of contigs (the remaining two edges in the graph)