MORPHOLOGICAL CHANGES OF RABBIT BLASTOCYSTS AT PREIMPLANTATION STAGE
- VernacularTitle:兔胚泡在着床前的形态变化
- Author:
Guoping HUANG
;
Miao DU
;
Deyu LU
- Publication Type:Journal Article
- Keywords:
Blastocyst;
Inner cell mass;
Primitive endoderm;
Polar trophoblast;
Rabbit
- From:
Acta Anatomica Sinica
1954;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Ultrastructural changes of the inner cell mass (ICM) in rabbit blastocysts from 4 to 7 days post coitum (p.c.) were observed with transmission electron microscope. It revealed that ICM of blastocyst on day 5 p.c. began to differentiate after they were arranged into a single layer, and under which the primitive endoderm appeared. It is suggested that the primitive endodermal cells in rabbit blastocysts are derived from the scattered ICM-like cells at the inner surface of the mural trophoblast rather than delaminated from ICM proper. In this paper, disruption and disappearance of polar trophoblast are described and discussed.
