Figure 2
From: Functional modelling of planar cell polarity: an approach for identifying molecular function
Diagrammatic representation of single and group order parameters. Top: Single cell order parameter with zero cell polarisation m = 0 (left) and finite polarisation m > 0 (right). Bottom: Group orientational order parameter with zero group polarisation M = 0, but with finite single cell order m > 0 (left). Finite group orientational order M > 0 and single cell order m > 0 (right). Single cell order parameter vector m and group orientational order parameter M are shown as black and red arrows respectively. θ is described for either a single cell orientation or the average orientation for a group of cells θA, relative to distal.