Corrigendum: The zebrafish dorsal axis is apparent at the four-cell stage

Nature 438, 1030–1035 (2005); doi:10.1038/nature04184 In Fig. 3p and q and Supplementary Table 3 of this Letter, the data for sqt MO2 and sqt MO3 were inadvertently mislabelled and should be swapped. The text on page 1033 that describes Fig. 3p and q should therefore read ‘sqt MO2’ not ‘sqt MO3’ on lines 4 and 13 of the second full paragraph of the left column.