| 1. | One issue in using uniparental es cells for tissue transplants is their durability and safety
使用单系胚胎干细胞进行组织移植中的问题便是其耐用性和安全性。 |
| 2. | This unambiguously proes that the transplanted uniparental cells could produce hematopoietic stem cells
这毫无疑问的证明了移植单系干细胞可以生成造血干细胞。 |
| 3. | Either of two basic units in cultural anthropology that make up a tribe on the basis of unilateral descent
一个分支在文化人类学中，在单系血统基础上构成一个部落的两个基本的部落分支的任意一个 |
| 4. | However , both the monophyly of living amphibians and the close phylogenetic relationships of frogs with salamanders are still debated
然而，现生的两栖类单系起源和蛙类与蝾螈类紧密的系统发生关系一直存在争议。 |
| 5. | The scientists found that uniparental es cells , regardless of parent - of - origin , were able to functionally reconstitute the entire hematopoietic system of adult mice
科学家发现单系胚胎干细胞，不管其亲代来源，可以在功能上重建成年小鼠的整个造血系统。 |
| 6. | Howeer , uniparental es cell research faces the biological hurdle of genomic imprinting , in which specific gene expression patterns are dictated by the parental origin
然而，单系胚胎干细胞研究面临着基因组印迹的生物学障碍，即特殊的基因表达模式受原始亲代的控制。 |
| 7. | Uniparental cells only hae the imprinting marks for one parental type ( or " from one parent " ) with unknown consequences if harested and transplanted into adults
单系细胞只有来自一个亲代的印迹标记类型（或来自一个亲代）并且在繁殖并移植到成年个体后可能带来未知的后果。 |
| 8. | Since uniparental es cells are not deried from iable embryos , their haresting and use sidesteps many of the ethical concerns that plague traditional es cell therapies
既然单系胚胎干细胞不是从可繁育的胚胎中获得，它们的收集和使用可以避开许多困扰着传统胚胎干细胞治疗的伦理学关注。 |
| 9. | And then a laminar structure was formed in the front of the crack tip . a microcrack might nucleate at the crack tip and propagate ahead perpendicular to the laminar structure
首次发现纯镁裂尖变形以单系滑移为主，其断裂过程是滑移减薄，形成层状结构，然后裂纹垂直于层状结构扩展。 |
| 10. | Four monophyletic groups have traditionally been united as myriapoda , namely chilopoda , pauropoda , diplopoda and symphyla . the relationships of myriapods are central to most questions in higher - level arthropod phylogeny
现生的多足动物主要由唇足纲、综合纲、少足纲和倍足纲四个单系群组成。 |
