您要查找的是不是：
- The yolk sac is gradually vascularized. 卵黄囊逐渐被血管化了。
- Meckel's diverticulum is the rudiment of the embryonic yolk sac. 麦克尔憩室是胚胎黄囊的未发育完全器官。
- 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。
- The zebra pattern is fairly distinct, and the yolk sac begins to flatten out as it is absorbed. 斑马格局相当鲜明,并卵黄囊开始平平,因为它是吸收。
- Conclusion Yolk Sac tumoy of ovary has their characteristic sonography features,Correct diagnosis rate can be... 结论:卵黄囊瘤超声声像图有一定的特征性,结合年龄、血清、临床症状,可以提高其诊断率。
- Purpose To study the clinicopathological features of yolk sac tumor(YST) of the heart. 目的:探讨心脏卵黄囊瘤临床病理特征。
- Kaplan GW,Cromie WC,Kelalis PP,et al.Prepubertal yolk sac testicular tumor-report of the testicular tumor registry[J].J Urol,1988,140(10):1109. 阮双岁，陆毅群，葛琳娟，等.;治疗小儿睾丸卵黄囊瘤25年的临床回顾[J]
- The fry have hatched and have huge yolk sacs. 南联盟已孵化和巨大的卵黄囊。
- Conjunctival scrapings obtained from clinically diagnosed but untreated trachoma patients were inoculated into the yolk sac of chicken embryo. 许多人因患沙眼而失明,丧失劳动能力,直接影响社会主义建设。摆在我们面前的任务是通过不断科学研究,加强防治沙眼工作。
- The secondary yolk sac(YS) is the first extraembryonic structure that can be detected with ultrasonography in the chorionic cavity. 卵黄囊是妊娠囊内超声能见的第一个解剖结构。
- An endodermal sinus tumor (yolk sac tumor) of the testis is shown composed of primitive germ cells that form glomeruloid or embryonal-like structures. 睾丸的内胚层窦肿瘤（卵黄囊肿瘤）由原始生殖细胞构成，这些细胞形成血管球或胚芽样结构。
- Sicari MC, Fyfe B,Pamess I, et al. Inttapericardiac yolk sac tumor associated with acute myocarditis. Arch Pathol Lab Med, 1999,123:241-243. 黄世章．卵巢卵黄囊瘤．见:程嘉骧;林汉良;赖日权．主编．疑难病例病理诊断精选.;广州：广东科技出版社，2000．361-362
- The progresses in study on yolk sac hemopoiesis as well as the proliferation, differentiation and regulation of the YSHSC are reviewed in this paper. 本文就卵黄囊造血及YS-HSC的增殖、分化及其调控机制的研究进展作一综述。
- The needle biopsy revealed the picture of a yolk sac tumor, which is one pathologic type of nonseminomatous germ cell tumor. 切片病理学检查发现卵黄囊肿瘤，为一种非精细胞生殖细胞瘤的类型。
- Antibody to AFP has been shown to be useful in detecting hepatocellular carcinomas （HCC） and germ cell neoplasms, especially yolk sac tumors. 主要用于检测肝细胞癌、生殖细胞肿瘤，尤其是卵黄囊肿瘤。
- I do not believe, however, that this is normal, since in the wild, young with such a large yolk sac probably would not survive without parental protection. 我不相信,不过,这是正常的,因为在野生环境年纪这么大的卵黄囊,也许就不会生存父母的保护。
- Unruptured type:97 patients massae were “Donut”.21 cases were pregnant sac,yolk sac or heart-bube pulsation in the massae.45 cases mixed type massae were ruptured type. 未破裂型中包块内呈“面包圈征”97例,包块内见妊娠囊及卵黄囊或原始心管搏动44例,已破裂型中呈囊实混合性包块41例,均经手术与病理证实,诊断符合率100%25。
- Samokhvalov IM, Samokhvalov NI, Hishikawa S. Cell tracing shows the contribution of the yolk sac to adult haematopoiesis[J]. Nature, 2007,446(7139): 1056. 秘祖霞，谢祁阳.;卵黄囊干细胞向粒一单系造血祖细胞的定向诱导分化[J]
- The yolk sac is shrinking. 该卵黄囊缩小。
- A strain of avian reovirus(ARV)designated NAU-8902 was isolated from a chicken witharthritis. The virus could replicate in chicken embryo yolk sac(YS),resulting in embryonic death. 从患关节炎病鸡肠道组织内分离到一株禽呼肠孤病毒(ARV);定名为 NAU-8902.;该病毒能在鸡胚卵黄囊内繁殖并致死鸡胚
