Differentiation and migration of endoderm in the rat and mouse at implantation

A. C. Enders, R. L. Given, S. Schlafke

Research output: Contribution to journalArticle

89 Citations (Scopus)

Abstract

The initial differentiation of endoderm at the time of onset of implantation, and the subsequent rapid differentiation of visceral and parietal endoderm were studied in the rat and mouse. Transmission electron microscopy illustrates the reorientation and loosening of embryonic cell mass cells during implantation, as well as cytological evidence that endoderm cells have differentiated. Using scanning electron microscopy, parietal endoderm consists of individual stellate cells with numerous peripheral branching filopodia. As these cells migrate abembryonically, the rest of the embryonic cell mass becomes recompacted. The visceral endoderm proliferates and forms a columnar epithelium which has the cytological characteristic of an absorptive epithelium and is able to ingest exogenous proteins. Thus, by 24 hr after implantation, the 2 endodermal derivatives have assumed widely diverse shapes and different types of associations and rates of replication, and are probably performing different functions.

Original languageEnglish (US)
Pages (from-to)65-77
Number of pages13
JournalAnatomical Record
Volume190
Issue number1
StatePublished - 1978
Externally publishedYes

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Endoderm
rats
mice
cells
epithelium
Epithelium
pseudopodia
Pseudopodia
Transmission Electron Microscopy
Electron Scanning Microscopy
transmission electron microscopy
branching
scanning electron microscopy
Proteins
proteins

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Anatomy

Cite this

Enders, A. C., Given, R. L., & Schlafke, S. (1978). Differentiation and migration of endoderm in the rat and mouse at implantation. Anatomical Record, 190(1), 65-77.

Differentiation and migration of endoderm in the rat and mouse at implantation. / Enders, A. C.; Given, R. L.; Schlafke, S.

In: Anatomical Record, Vol. 190, No. 1, 1978, p. 65-77.

Research output: Contribution to journalArticle

Enders, AC, Given, RL & Schlafke, S 1978, 'Differentiation and migration of endoderm in the rat and mouse at implantation', Anatomical Record, vol. 190, no. 1, pp. 65-77.
Enders, A. C. ; Given, R. L. ; Schlafke, S. / Differentiation and migration of endoderm in the rat and mouse at implantation. In: Anatomical Record. 1978 ; Vol. 190, No. 1. pp. 65-77.
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