PLACENTATION

PLACENTATION
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DOI:
10.1002/jez.1402280221
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发表时间:
1983-01-01
影响因子:
--
通讯作者:
BENIRSCHKE, K
BENIRSCHKE, K
中科院分区:
其他
文献类型:
--
作者:
BENIRSCHKE, K

文献摘要

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不同类群成员的胎盘发育差异很大。不仅囊胚附着发生的时间不同,滋养层的穿透力也有很大差异。从胎儿和母亲之间的上皮绒毛关系到类群(例如高等灵长类动物)的血绒质胎盘,滋养层越来越多地暴露于母体免疫识别,这可能是种间胚胎移植或杂交中排斥的原因之一。子宫和子宫内膜的形状以及遗传因素决定胎盘的形态。该论文回顾了有蹄类动物的胎盘、种间胚胎移植的成功和失败,以及对灵长类动物胎盘遗传决定因素的了解不足。
Placental development differs greatly among members of different taxa. Not only does blastocyst attachment take place at different times, the penetration of trophoblast varies considerably. From an epitheliochorial relationship between fetus and mother to the hemochorial placentation of taxa, such as the higher primates, the trophoblast becomes increasingly exposed to maternal immune recognition which may be one cause of rejection in interspecific embryo transfers or hybridization. Shape of uterus and endometrium and genetic factors govern the morphologic form of the placenta. The paper reviews ungulate placentation, successes and failures of interspecific embryo transfers, and the scant knowledge of genetic determinants in primate placentas.