extraembryonic 

  1. 形容詞
胚胎外的

    
                        
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例句

                

                    
    
                                                    
  1. 
                                In the developing placenta, the extraembryonic mesoderm failed to invaginate the trophoblast layer.                            
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  2. 
                                Cells of the epithelium are bound basally to a laminal matrix and apically to an extraembryonic matrix.                            
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  3. 
                                An extraembryonic membrane in the egg, the serosa, helped insects to make the transition from water to land.                            
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                                The apical microvilli of these cells reach into the hyaline layer, a component of the extraembryonic matrix.                            
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  5. 
                                PGCs come from the epiblast and move to the hypoblast to form the germinal crescent (anterior extraembryonic structure).                            
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