Fig. 1: Schematic diagrams of controllable dynamics of DNA nanostructures based on toehold-free strand displacement.
From: DNA dynamics and computation based on toehold-free strand displacement

Tree maps of binding reactions of (a) one species of blocker to displace one species of pre-specified segment (nn*) or (b) two species of blockers to displace two species of pre-specified segments (n1n1*, n2n2*).