allantois

1. Relating to or characterized by an allantois.
   由尿囊特性的或与之相关的。
2. Objective To observe the influence of the Formula of Jia Wei Bao An on angiogenesis in chicken embryo allantois membrane ( CAM).
   目的观察加味保安方对鸡胚尿囊膜血管（CAM）生成的影响。
3. 2-D Gaussian filters for detecting blood vessels in allantois membrane images
   二维高斯滤波法在尿囊膜血管检测中的应用
4. The cows were scanned in the 30th day after fertilization, thickening of uterine wall, allantois, embryo and placentome were revealed in the ultrasonography, and the heartbeat of embryo had not been detected.
   本试验对妊娠30d左右的母牛的探查可以看到增厚的子宫壁、尿囊腔、胚胎、胎盘突等回声，没有观察到胚心搏动。
5. The X-ray contrast examination showed that the allantois was developing well with no obstruction;
   术后4周X射线造影检查显示：贮尿囊显影良好，无梗阻；
6. The different patterns between the normal and the infected allantois fluid samples which included influenza viruses type A, B and newcastle disease virus were clearly shown in the pyrograms.
   正常鸡胚尿囊液样品与病毒感染样品间，流感病毒与新城疫病毒间以及甲型流感病毒与乙型流感病毒间存在着明显差异。
7. The quality of vascular images of allantois membrane is usually poor because of the poor local contrast and the complex distribution of the vesseles. Therefore, the detection of vascular tree is an uneasy task.
   通常，尿囊膜的血管图像质量较差，原因在于血管纵横交错地分布于尿囊膜上，图像的对比度低，从而导致血管检测工作十分困难。

noun

1. the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)