卵黄

On the 14th day after yolk sac had disappeared, gonad had differentiated to ovary.

生殖腺中卵的成熟及卵巢腔的形成是「由前往后之层次」成熟，在卵黄囊消失后第四十九天的鱼苗，卵巢的发育至周边核仁期。

When the water temperature is 29-31 ℃,the time of hatch is 19 h.The yolk sac is disappear basically after 70 h.Larvae begin to eat after 90 h.

在水温2931℃时，孵化时间为19 h，孵出仔鱼后70 h卵黄囊基本消失，90 h开始摄食。

Comparison of genes in yolk sac cells with a total of 1 200 genes in the control cells, 79 genes differently expressed between the two groups were detected.

在神经管缺陷大鼠胚胎卵黄囊细胞和对照组1 200个基因中，共筛选出表达差异基因79个，其中42个基因表达上调、37个基因表达下调。

Results:In the group,there were 17(26.2%)cases of embryonal carcinomas,13(20%) cases of teratomas,10(15.4%) cases of yolk sac tumors,4(4.6%) cases of choriocarcinomas and 22(33.8%) cases of m...

结果：65例NSGCT患者中，胚胎癌17例(26.2%)，畸胎瘤13例(20%)，卵黄囊瘤10例(15.4%)，绒毛膜上皮癌3例(4.6%)，混合性生殖细胞瘤22例(33.8%)。

The gonads form from a group of large granulated yolk sac cells which invacle the germinal ridges.

性腺是由一群大的颗粒的卵黄囊细胞入缀生殖峭而形成。

It is concluded that alcohol has developmental toxicity and teratogenicity. The target organ affected by alcohol is brain. The effects of alcohol on the developmental differentiation of visceral yolk sac and DNA synthesis are probably related to its developmental abnormalities.

结论认为酒精具有发育毒性和致畸性，酒精作用的主要靶器官是脑，酒精对卵黄囊发育分化和DNA合成的影响可能与其发育异常有关。

We creatively used yolk sac membrane to assess the antiangiogenic activity of rhK1-3 in vivo.

创造性地建立了鸡胚卵黄囊膜(yolk sac membrane， YSM)血管生成模型，在器官水平上研究了rhK1-3对鸡胚YSM血管生成的影响。

The indistinguishable yolk sac tumors cell in teratomas can be found by AFP staining combined with SP1 staining.

AFP和SP1可检出畸胎瘤中不易察觉的卵黄囊癌成分。

It is usually best to wait until the yolk sack is gone before removing them.

最好是在他们的卵黄逐渐消失但是还没有完全消失的时候。

Production of yolk in the egg supplies the necessary fuel for the first few rounds of division of the zygote.

为了合子头几次分裂的需要，卵的卵黄产物提供必要的能量。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。