porphyrins 

  1. 名詞
卟啉(又稱紫質, 一類由四個吡咯類亞基的α-碳原子通過次甲基橋互聯而形成的大分子雜環化合物)

    
                        
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例句

                

                    
    
                                                    
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                                Glycine is a precursor of porphyrins such as heme.                            
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                                All samples to detect porphyrins must be handled properly.                            
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                                For example, porphyrins –associated with some skin diseases–will fluoresce pink.                            
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                                Porphyrins fluoresce in UV light and exhibit circular white spot characteristics.                            
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                                The FDA has approved a test measuring porphyrins as a test for mercury poisoning.                            
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