FERTILIZATION AND EARLY EMBRYONIC-DEVELOPMENT IN POULTRY

被引:9
作者
BELLAIRS, R
机构
[1] Department of Anatomy and Developmental Biology, University College London
关键词
FERTILIZATION; GRAVITY; POLARITY; PRIMITIVE STREAK; REPRODUCTION;
D O I
10.3382/ps.0720874
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
There are two major controllers of development in the early stages of bird embryos. These are: 1) gravity, probably acting through the distribution of yolk and its components, which lays down the initial plans for polarity that are later established firmly through the genes; and 2) the primitive streak, which controls the orderly ingression of the cells and imposes a pattern on the developing tissues.
引用
收藏
页码:874 / 881
页数:8
相关论文
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