Changes in structure of the trophectoderm of a marsupial in Mid-pregnancy up to the time of implantation

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dc.contributor.authorRoberts, C.
dc.contributor.authorBreed, W.
dc.date.issued1996
dc.description.abstractPre- and peri-implantation embryos of the dasyurid marsupial Sminthopsis crassicaudata were examined for morphological differentiation of the trophectoderm. The cells of unilaminar blastocysts were all squamous and stained intensely with toluidine blue. In bilaminar blastocysts and embryos at the early embryonic-disc stage, the trophectoderm was similar in appearance to, but stained more lightly than, the underlying endoderm. Trophoblast differentiation did not appear to occur until the mesoderm had begun to migrate between the trophoblast and endoderm beyond the embryonic disc. At this stage, trophoblasts had three distinct morphologies: (1) vacuolated, tall and columnar cells in the trilaminar region; (2) large cuboidal cells in the adjacent bilaminar region; and (3) squamous cells in the abembryonic pole of the bilaminar region. These variations in cell structure correlate with differences in subsequent functional activity in these three regions of the yolk sac placenta.
dc.description.statementofresponsibilityC. T. Roberts and W. G. Breed
dc.identifier.citationReproduction, Fertility and Development, 1996; 8(4):797-802
dc.identifier.doi10.1071/RD9960797
dc.identifier.issn1031-3613
dc.identifier.issn1448-5990
dc.identifier.orcidRoberts, C. [0000-0002-9250-2192]
dc.identifier.orcidBreed, W. [0000-0003-1739-6593]
dc.identifier.urihttp://hdl.handle.net/2440/5458
dc.language.isoen
dc.publisherCSIRO Publishing
dc.rights© CSIRO 1996
dc.source.urihttps://doi.org/10.1071/rd9960797
dc.subjectYolk Sac
dc.subjectTrophoblasts
dc.subjectBlastocyst
dc.subjectEctoderm
dc.subjectSomites
dc.subjectAnimals
dc.subjectMarsupialia
dc.subjectCell Differentiation
dc.subjectEmbryonic and Fetal Development
dc.subjectEmbryo Implantation
dc.subjectPregnancy
dc.subjectFemale
dc.subjectMale
dc.subjectEmbryo, Mammalian
dc.titleChanges in structure of the trophectoderm of a marsupial in Mid-pregnancy up to the time of implantation
dc.typeJournal article
pubs.publication-statusPublished

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