| 摘 要： | <正>Capable of self-renewal and differentiation,stem cells have a great potential to be used in the study and treatment of human diseases,tissue and organ construction,reproduction and many other f ields.1.Current status and trends of stem cell research in the world The tremendous application potential of stem cells has stimulated the enthusiasm of worldwide researchers.By August 2013,SCI had included 240,000 papers regarding stem cells,focusing on their acquisition and construction,regulation mechanism and applications,etc.(1)Acquisition technologies of stem cells Stable sources of stem cells and the establishment of stem cell lines are the basis of stem cell research.In addition to discovering and purifying adult stem cells in different tissues,scientists have been looking for a method to acquire embryonic stem cells(ESC).However,ethical issues make it diff icult to get suff icient ESC for scientif ic research and clinical
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