yiliudewendu
杭州lili
对于一个具体的课题来说,相关文献分属于三个层次:研究方向、研究领域、研究课题。例如有人研究干细胞定向分化治疗帕金森病,对他来说,研究方向就是帕金森病,研究领域是帕金森病的干细胞治疗,研究课题是某种物质诱导干细胞定向分化为分泌多巴胺的神经细胞。看文献时要分清手上的文献是属于那个层次,这决定你对它要掌握到什么程度。研究方向层次的文献:一般涉及,基础知识,学科水准,了解当前重大进展与趋势,达到专业人员水平;研究领域层次的文献:了解焦点与热点,已/正/将进行的课题,达到专家水平;研究课题层次的文献:要全面,了解历史、现状、展望、主要方法、手段,达到No1专家水平。正确分辨文章的层次,才能把精力用到点子上。我可以帮忙
微雨燕双飞1988
丢掉胎盘,就丢掉了宝贵的医疗资源!科学家告诉你如何做正确的选择!美国《新科学家》网站在梵蒂冈举行的再生医学联合治疗会议上采访了奇点大学创始人彼得戴曼迪斯以及全球制药巨头新基医药创始人罗伯特·哈里里。在过去,孕妇分娩后的胎盘往往被当做医疗垃圾处理,这等于丢弃了胎盘中丰富的干细胞——这是一种十分宝贵的医学资源。目前,这两位科学家正致力于利用胎盘干细胞来帮助人类通往健康长寿。列举生命依赖的器官,很多人可能会忽略胎盘。然而,胎盘对胎儿的发育起到至关重要的作用,为胎儿提供营养和氧气,并清除废物。胎盘是胎儿与母体间进行物质交换的重要器官,是一种丰富的干细胞来源。目前,仍然有大多数胎盘被丢弃,根据未来科学家彼得戴曼迪斯的观点,丢弃胎盘会导致人们错过一种宝贵的医疗资源。
表哥很内涵
AbstractSignificant research efforts have been undertaken in the last decade to develop specific cell-based therapies and, in particular, adult multipotent mesenchymal stem cells (MSCs) hold great promise toward such regenerative Bio-materials have been widely used in reconstructive bone surgery to heal critical-size bone defects due to trauma, tumor resection, and tissue In particular, gelatin cryogel scaffolds are promising new biomaterials owing to their There is an increasing demand for MSC-based regenerative approaches in the musculoskeletal Combining stem cells with biomaterial scaffolds provides a promising strategy for tissue Our previous studies showed the possibility to obtain MSCs from the human ovarian follicular liquid (FL) that is usually wasted during in vitro fertilization (IVF) In this study, we tested the ability of these FL cells to grow on gelatin cryogel in comparison with MSCs derived from human bone Samples and controls were analyzed with confocal and scanning electron Results demonstrated that FL cells could grow on the biomaterial not only on the top but also in the layers below till 60 µm of Data suggested that the observed cells were mesenchymal since positive for vimentin and CD-44, typical MSC Successful growth of putative MSCs derived from follicular liquid on 3D gelatin cryogel opens potential developments in biotech and medical applications
AbstractSignificant research efforts have been undertaken in the last decade to
胚胎干细胞(Embrtibuc stem cell)的发育等级较高,是多能干细胞(Pluripotent stem cell),而成体干细胞的发育等级较低,是单
在过去的20多年里,随机模型是癌症发生的主流观点。按照随机模型,正常体细胞中原癌基因和抑癌基因发生随机突变,从而获得更强的增殖能力、分化抑制和克隆选择,最终导致
因为这种干细胞技术很有可能会让头发重新长出来,这对秃头的人来说非常的重要,所以引起了很多群体的关注。
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