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对负鼠卵黄囊绒毛膜在即将附着于子宫前的扫描电子显微镜观察。

Scanning electron microscopic observations on the opossum yolk sac chorion immediately prior to uterine attachment.

作者信息

Krause W J, Cutts J H

出版信息

J Anat. 1984 Jan;138 ( Pt 1)(Pt 1):189-91.

PMID:6706836
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1164319/
Abstract

The 10 day opossum embryo is enclosed by a yolk sac chorion in which distinct vascular and non-vascular regions are established before attachment to the uterine epithelium. The embryo is closely associated with the vascular region which becomes adherent to the uterine lining. Cells of the external layer bear abundant, closely packed, long microvilli, which may serve to absorb nutrients from the uterine secretions. Cells of the inner surface show only scattered microvilli and microplicae on their apical surfaces.

摘要

10日龄的负鼠胚胎被卵黄囊绒毛膜包裹，在附着于子宫上皮之前，其中会形成明显的血管区和非血管区。胚胎与血管区紧密相连，血管区会附着于子宫内膜。外层细胞带有丰富、紧密排列的长微绒毛，这些微绒毛可能用于从子宫分泌物中吸收营养。内表面的细胞在其顶端表面仅显示散在的微绒毛和微褶。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/163a/1164319/aee8d1f0e7d6/janat00201-0194-d.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/163a/1164319/056f7ff8515e/janat00201-0194-a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/163a/1164319/7b1f5efcf7eb/janat00201-0194-b.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/163a/1164319/6dc30412d94f/janat00201-0194-c.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/163a/1164319/aee8d1f0e7d6/janat00201-0194-d.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/163a/1164319/056f7ff8515e/janat00201-0194-a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/163a/1164319/7b1f5efcf7eb/janat00201-0194-b.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/163a/1164319/6dc30412d94f/janat00201-0194-c.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/163a/1164319/aee8d1f0e7d6/janat00201-0194-d.jpg

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The yolk sac as the main organ in the early stages of animal embryonic development.卵黄囊是动物胚胎发育早期的主要器官。
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本文引用的文献

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Uterine proteins in the marsupial, Didelphis Marsupialis virginiana, during gestation.妊娠期有袋动物弗吉尼亚负鼠子宫中的蛋白质。
J Reprod Fertil. 1975 Jan;42(1):163-6. doi: 10.1530/jrf.0.0420163.