Fig 4. Asymmetric perinodal expression of Cerl2 and Nodal is delayed and then randomized in Ccdc40^lnks/lnks embryos.

Nodal (A-F) and Cerl2 (G-L) expression around the node of wild type (A-C, G-I) or Ccdc40^lnks/lnks embryos (D-F, J-L) at the indicated somite stages. M, N. Quantitation of the number and percentage of embryos with right > left (green), left > right (blue) or unbiased (left = right, L = R, magenta) perinodal Nodal (Q) or Cerl2 (R) expression. Left (L) and Right sides are labeled in panel A.