gastrula

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Introduction

The embryo in stage of development following the blastula. It consists of an endoderm & an ectoderm enclosing an archenteron, which opens to the outside via a blastopore. The different extent of yolk in the embryo of different species greatly modifies this basic structure.

More general terms

References

  1. Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999.