Extended Data Fig. 10: Left–right difference in somite length is weakly correlated with anterior somite boundary difference.
From: Left–right symmetry of zebrafish embryos requires somite surface tension
(A) Schematic of measurement of boundary position difference. The points of intersection of orthogonal lines (cyan) from somite boundaries on the left (L) and right (R) sides with the middle of the notochord (black dashed line) are determined. A difference in the median position (red dots) of these points of intersection represents boundary position difference (black arrow). Boundary positions increase positively from P to A. (B-C) AP length difference between left–right somite pairs is weakly correlated with anterior boundary position difference both initially (r = −0.24, 95% CI = −0.45 to −0.03) (B) and after 1 h (r = −0.29, 95% CI = −0.48 to −0.10) (C). 76 somite boundaries; 17 embryos from 10 independent spawnings.
