• ectoderm
  • During gastrulation, the Drosophila mesoderm invaginates and forms a single cell layer in close juxtaposition to the overlying ectoderm. (biologists.org)
  • The embryonic stem cell lines also retain the ability, throughout the culture, to form trophoblast and to differentiate into all tissues derived from all three embryonic germ layers (endoderm, mesoderm and ectoderm). (google.es)
  • Mouse ES cells cultured in non-attaching conditions aggregate and differentiate into simple embryoid bodies, with an outer layer of endoderm and an inner core of primitive ectoderm. (google.es)
  • types
  • Subsequently, particular cell types within the mesoderm are specified along the anteroposterior and dorsoventral axes. (biologists.org)
  • Furthermore, we present evidence from genetic analysis suggesting that, before stage 10 of embryogenesis, gonadal mesoderm and the fat body have not yet been specified as different cell types, but exist as a common pool of precursor cells requiring the functions of the tin, zfh-1 and cli genes for their development. (biologists.org)
  • For example, a hematopoietic stem cell may give rise to any of the different types of terminally differentiated blood cells. (google.es)