若进行人类生殖(干)细胞基因治疗等于是把前胚胎(pre-embryo)当作病人，生 殖(干)细胞因此获得病人的地位，病人是需要被保护的，然而这类研究或治疗 的危险性、失败率这么高，势必有许许多多...
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in vitro fertilization pre-embryo transfer 胚胎移植
pre-developed embryo 早发生胚
Sexing pre-implantation embryo 早期胚胎性别鉴别
N the structure formed after fertilization of an ovum but before differentiation of embryonic tissue 早期胚胎
Before morality in a strict sense comes into being, a pre-morality quality has already existed, which is actually the morality embryo.
主体在产生严格意义上的道德之前，已经存在着前道德素质，它实际在孕育着道德胚芽。
"On a lark, I decided to take a long-exposure fluorescent image of a pre-hatchling salamander embryo," says Kerney.
“抱着随便玩玩想法，我决定对一个还没孵化蝾螈胚胎进行长时间荧光照射并观察了其图像，”克尼说。
Color of embryo of white spot pike changes gradually from light-yellow in early stage to green-yellow in middle stage, and finally to brown in pre-hatching stage.
白斑狗鱼胚胎颜色随着发育进程由起始的淡黄色转为绿黄色，最终出膜前转变为棕褐色。
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