expression of the transcription factors six3 and foxq2 demarcates the most apical body region. In Saccoglossus and Nematostella, the six3+, foxq2+ domain is peripherally
expression of the transcription factors six3 andfoxq2 demarcates the most apical body region. In Saccoglossusand Nematostella, the six3+, foxq2+ domain is peripherally