Drupal-Bibcite0<style face="normal" font="default" size="100%">Antagonistic interactions in the zebrafish midline prior to the emergence of asymmetric gene expression are important for left-right patterning.</style><style face="normal" font="default" size="100%">Antagonistic interactions in the zebrafish midline prior to the emergence of asymmetric gene expression are important for left-right patterning.</style>