Effects of gm1 on inducing adult rat bone marrow stromal cells to neural progenitor cells and their differentiation 单唾液酸四己糖神经节苷脂诱导成年大鼠骨髓基质细胞成为神经前体细胞及其分化作用的研究
Can we rely on telomere - depleted stem cells removing themselves by differentiation ? if not , what strategies are appropriate to prevent deleterious side - effects 我们能依赖端粒删节的干细胞以分化作用而除去它们自己吗?如果不能,什么策略适于预防有害的副效应?
Although the products have same chemical compositions , they will exhibit various isotopic ratios if they produced from different sources or by different chemical / physical processes 虽然物质具相同之化学组成,但如果来源不同或经不同物理化学过程所产生,其同位素比值会因同位素的分化作用而有差异。
The stable isotopic research is established by studying the discrepancy in isotope ratio , which was caused by isotope fractionation , and the isotopic ratio difference can be determined by mass spectrometer 稳定同位素的研究主要是建立在此同位素分化作用所造成的同位素比值差异,而此同位素比值差异可被质谱仪测知。