器官原基

青鱼的原始器官原基的形成和消化系统呼吸系统的发生

A preliminary study on the formation of the primary organ rudiment and development of the digestive and the respiratory systems of the black carp

罗氏沼虾胚胎发育研究Ⅱ.原始器官原基形成和消化系统的发生

A study on embryonic development of the giant freshwater prawn , macrobrachium rosenbergii ( de man ) ( crustacea , decapoda ) ⅱ . the formation of the primary organ rudiment and development of the digestive system

本文应用小鼠全胚胎培养技术，通过妊娠d8分别ip5,10,15和20mg·kg-1环磷酰胺（CP），研究了该药对器官原基形成期胚胎的致畸作用，并对其致畸机理作了初步探索。

Using the mouse whole embryo culture technique , the teratogenesis induced by cyclophosphamide ( CP ) ( 5 , 10 , 15 , 20 mg · kg - 1 , ip ) and its mechanism were investigated in mice on d 8 of gestation .

阶段1～4为器官原基发生时期；

During stages 1 ~ 4 the flower bud underwent initiation of flower organ primordia ;

花椰菜的食用花球是由许多肉质花梗和花器官原基组成的。

The edible curd of cauli flower is composed of lots of pedicels and the primordia of flower organs .

花模式建成包括花分生组织的形成、花分生组织的区域化（或花器官原基的起始）和花器官属性的决定三个阶段。

Floral pattern formation includes three stages , floral meristem formation , floral meristem partition / floral organ primordia initiation and floral organ identity determination .

胸腺、甲状腺、肾脏仍属器官原基，分化水平较低。

But the developments of the thymus , thyroid , kidney are in the condition of the primary rudiment , their levels of differentiation are also lower .

在60日龄时，消化系统基本发育完成。3.大菱鲆免疫器官原基出现的先后顺序是头肾、脾脏和胸腺。

At 60 DAH , the digestive system completed development . 3 . The sequence of immune organ anlages appearance were head kidney , spleen and thymus .

生殖生长锥在发育过程中可以明显地观察到两层原体细胞，各花器官原基主要来自于花分生组织的边缘区细胞。

An larges of each floral primordium originated in peripheral zone cells of floral meristem . The flower meristem identity genes can activate the homeotic genes to some extent .

从器官原基发生至花开放以前，按形态和细胞学特征，将花的发育分为16个阶段。

From the appearing of the primordia to the time before flowering , flower bud differentiation and development has been divided into 16 stages by correlating morphological and cytological traits of the flower buds .

其中花瓣原基的分化只进行一次，这是形成单轮花瓣的原因。生殖生长锥在发育过程中可以明显地观察到两层原体细胞，各花器官原基主要来自于花分生组织的边缘区细胞。

Of them one time was occurred in differentiation of sepal primordium , and it might be the reason of forming the simple layer of sepal . An larges of each floral primordium originated in peripheral zone cells of floral meristem .

NP对造血器官和翅原基的影响都有明显的浓度效应。

There are obvious density effects of NP to the hemopoietic organs and wing disc .