| 翻訳と辞書 |
trophoblast
Trophoblasts (from Greek ''trephein'': to feed, and ''blastos'': germinator) are cells forming the outer layer of a blastocyst, which provide nutrients to the embryo and develop into a large part of the placenta. They are formed during the first stage of pregnancy and are the first cells to differentiate from the fertilized egg. This layer of trophoblasts is also collectively referred to as "the trophoblast",〔http://www.britannica.com/EBchecked/topic/606502/trophoblast〕 or, after gastrulation,〔(Merriam-Webster's Medical Dictionary > trophectoderm ) Retrieved August 2010〕 the trophectoderm, as it is then contiguous with the ectoderm of the embryo.
==Structure==
The trophoblast proliferates and differentiates into 2 cell layers at approximately 6 days after fertilization for humans:
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「trophoblast」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|