... duodenum and extrahepatic biliary system to pancreas, with formation of many endocrine cell clusters of the type found in normal islets of Langerhans. Sliding the Ptf1a EDD expression window through embryogenesis revealed differential temporal competencies for stomach-pancreas respecification. The response...

... the neural tube. * Author for correspondence 30 04 1993 © 1993 by Company of Biologists 1993 cell lineage ablation regeneration respecification cell marking techniques regulation chick The vertebrate nervous system primarily arises from the neural plate...

... of axial levels by Hox codes, defined as combinations of expressed Hox genes. 05 03 1992 © 1992 by Company of Biologists 1992 retinoic acid vertebrae Hox genes respecification Formation of the anteroposterior body axis is tightly coupled to the formation of mesoderm during...