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The Response of the Preimplantation Embryo to Exogenous Factors

  • Cecilia Lutwak-Mann
Part of the Current Topics in Pathology book series (CT PATHOLOGY, volume 62)

Abstract

The influence of exogenous agents upon the free-lying pre implantation embryo (blastocyst) is one of the areas of inquiry that is specifically concerned with the much wider problem of maternal-embryonic relationships and exchange reactions between the embryo and its environment. The mechanisms underlying these reactions are carefully adjusted by systems which act at the level of the endometrium and its secretory products, as well as those belonging to the blastocyst, and inherent in the zona pellucida, and the highly evolved trophoblastic elements. All these processes remain throughout under strict ovarian hormonal control; hormones emanating from the blastocysts themselves are probably also involved, as it has been shown that blastocysts contain several steroid hormones (Seamark and Lutwak-Mann, 1972) and a gonadotropin type of hormone (Haour and Saxena, 1974;Lutwak-Mann, unpublished).

Keywords

Zona Pellucida Foreign Agent Preimplantation Embryo Exogenous Agent Embryonic Disk 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag Berlin-Heidelberg 1976

Authors and Affiliations

  • Cecilia Lutwak-Mann

There are no affiliations available

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