胚胎发育

Classification by histogenesis:(1) Primary tumor 6 679 cases: epitheliogenic 2 481 cases (37.15%), mesenchymal 753 cases (11.27%), lympho-hematopoietic 102 cases (1.53%), neurogenic 1 542 cases (23.09%), congenital abnormal embryogenetic 1 767 cases (26.46%), uncertain resource tumor 34 cases (0.50%).(2) Secondary tumor 13 cases;(3) Metastatic tumor 9 cases;(4) Non-tumor lesion 1 972 cases.

按组织发生学分类：（1）原发性肿瘤6 679例（77.01%），其中上皮组织肿瘤2 481例（37.15%），间叶组织肿瘤753例（11.27%），淋巴造血组织肿瘤102例（1.53%），神经组织肿瘤1 542例23.09%），先天胚胎发育异常肿瘤1 767例（26.46%），不明来源肿瘤34例（0.50%）；（2）继发性肿瘤13例(0.15%；（3）转移性肿瘤9例(0.10%)；（4）非肿瘤性病变1 972例(22.74%)。

Survivin is expressed during embryonal development but is absent in most normal,terminally differentiated tissues.

Survivin表达于胚胎发育时期，而在大部分正常及分化成熟的组织中不表达。

Engraulis japonicus ; egg ; larva ; embryo development ; environmental conditions ; the Northern of East China Sea ; the Southern of Yellow Sea

鳀； 鱼卵；仔稚幼鱼；胚胎发育；环境条件；东海北部；黄海南部

High levels of Cre expression was detected in the epithalamus and anterior thalamus of the diencephalons, and superior colliculus and pretectum of the midbrain.

我们进一步观察到Cre重组基因在胚胎发育第10天的脑部开始有表现，并一直持续至出生前，其分布位置与成鼠的脑部一致。

Amniotic epithetical cells are early product of embryonic development.So they probably contain versatility stem cells.

羊膜上皮细胞是胚胎发育的早期产物，所以其中可能含有多潜能干细胞。

Except for religious fanatics and those ignorant of the process of embryonic development, nobody would believe that an undivided, feelingless glob of a cell is a person.

除了狂热的宗教人士和对人的胚胎发育过程一无所知的人，没有谁会认为那样的一团没分化、感觉的细胞是一个人。

Except for religious fanatics and those ignorant of the process of embryonic development, nobody would believe that an undivided, feelingless glob of a cell is a person.

除了狂热的宗教人士和对人的胚胎发育过程一无所知的人，没有谁会认为那样的一团没分化、没感觉的细胞是一个人。

Since the discovery of their flagellated spermatozoids by Hirase and Ikeno, the general mor- phology and anatomy,the life cycle and the systematic evolution of Ginkgo and cycads have been described in many reports.

自1896年Hirase和Ikeno分别发现银杏和苏铁类植物的游动精子以来，研究人员对它们的生活史、胚胎发育、系统演化等已进行了大量研究。

The results indicated that GFP gene expression began at the end of gastrula stage, and lasted to fry at a stable expression level.

采用显微注射法将报告基因GFP基因导入蓝太阳鱼受精卵中，研究了外源基因在鱼类胚胎发育过程中整合与表达的时序。

The expression characterization of gibel carp Caghira gene in different tissues and stages of embryogenesis were analyzed by RT-PCR and whole mout in situ hybridization.

采用RT-PCR方法并结合整体原位杂交的方法分析了银鲫Caghira在不同组织中和胚胎发育不同阶段中的表达特征。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。