Fig. 2. (A-C) Mediolateral contribution of the thoracic unilateral monosegmented clones. Each white rectangle represents a clone, with its reference is indicated at the left. The medial border of the labelled segment is at the left, the lateral border at the right. Each segment is divided into 100 parts of equal length. Each part with labelled cells is represented by a bar of colour. The number of labelled cells is colour-coded: blue, one cell; green, 2 cells; yellow, 3 or 4 cells; red, 5 or more cells. (A) Monosegmented clones ordered by the middle position of their labelling, MidP=(MB+LB)/2, where MB is the medial border and LB the lateral border of the clone. (B-C) Classification of the monosegmented clones in relation to the clonal separation at 40-50% of the ML axis. The epaxial (B) and hypaxial (C) restricted clones are ordered by their lateral or medial border, respectively. m, medial; l lateral.