Fig. 1From: Inferring 3D chromatin structure using a multiscale approach based on quaternionsModified bead-chain model. a–d Consecutive fragments of the chromatin fibre, represented as bead sequences (red balls linked by yellow segments), and as centroid-endpoints triples (blue balls linked by blue segments). The green spheres represent the assumed sizes for the beads at the lower resolution. e Lower-resolution chain composed by the fragments in a–d Back to article page