Expression and function of an even-skipped homolog in the leech Helobdella robusta.

  title={Expression and function of an even-skipped homolog in the leech Helobdella robusta.},
  author={Mi Hye Song and Françoise Z Huang and Gwendolen Y Chang and David A. Weisblat},
  volume={129 15},
We have identified homologs of the Drosophila pair-rule gene even-skipped in the glossiphoniid leeches Helobdella robusta and Theromyzon trizonare. In leech embryos, segments arise sequentially from five pairs of embryonic stem cells (teloblasts) that undergo iterated divisions to generate columns (bandlets) of segmental founder cells (primary blast cells), which in turn generate segmentally iterated sets of definitive progeny. In situ hybridization revealed that Hro-eve is expressed in the… CONTINUE READING


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