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          entertainment  
          
                                   
                 
                                      author：focus   
                                        
                                      
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browse：75176
                                  
                                    
          
                                    
            
          
 
          Mouse embryo in bottle. -- coverage from STAT
          A mouse embryo model created entirely from stem cells. Scientists have since used similar systems to build models of human embryos.																									Jacob Hanna —Weizmann Institute
          Earlier this month, a British journalist broke the news that researchers had taken a major step toward growing stem cells into structures that resemble human embryos.
          Details about the experiments, and any sort of outside analysis of their quality or significance, were scarce, since the academic paper summarizing the work was still under peer review. But as the news spread around the globe, other scientists who had more quietly been working in the same area quickly posted preprints of their own progress.
          advertisement
          Almost overnight, it seemed, the world was awash in different ways to coax stem cells into something that looked like the earliest days of a human life. The pushback was immediate, prompting accusations of overblown claims as well as outcry about ethical considerations and legal guardrails lagging behind the pace of scientific progress. Meanwhile, former Trump adviser Steve Bannon’s podcast, which studies have found to be a top spreader of misinformation, denounced synthetic babies as “the next abomination.”
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                                          Creating egg and sperm cells from stem cells raises ethical issues
                                                                    
          

      
           
      
           
        
           
                                               
        
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              Theparentsofthesemousepupswereasame-sexcouple.Anewassisted-reproductionprocesscouldsomedaymakethatpo
             
           
      
          
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