Now, a study of chick embryos shows that birds do indeed have thumb, index, and middle "fingers" in their wings.
现在，一份对鸡胚胎的研究，鸟类的翅膀的趾中确实有类似于人类拇指、食指和中指的趾的分化。
Chick embryos have well-characterized stages and are a valuable model for examining vertebrate development.
鸡胚发育的阶段性具有明显的特征，是研究脊椎动物发育的很有价值的模型。
Methods Experimental chick embryos were subjected to cardiac neural crest ablation using electric stimulation.
方法用电极刺激方法在鸡胚发育早期破坏心脏神经嵴，建立圆锥动脉干缺损模型。
The researchers grew grafts of cells from "stage 3" chick embryos, before the neural plate formed, in non-inducing cultures.
研究者们在神经板形成前，从“阶段3”的鸡胚种移植了一些细胞，种植在非诱导性培养物中。
The morphogenesis of the branchial apparatus was examined by scanning electron microscopy in chick embryos from stages 11 to 21.
用显微解剖术和扫描电镜方法观察第11～21期鸡胚鳃器官的形态结构．鸡胚鳃器官由4对鳃弓、鳃沟、鳃膜和咽囊组成。
The field virus caused lesions and death of the chick-en embryos and cytopathic effect of the chicken embryo fibroblasts.
该病毒致使非免疫鸡胚病变、死亡和鸡胚成纤维细胞病变。
The field virus caused lesions and death of the chick-en embryos and cytopathic effect of the chicken embryo fibroblasts.
该病毒致使非免疫鸡胚病变、死亡和鸡胚成纤维细胞病变。
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