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    • The Clinical Diagnosis of Porphyrias by Tandem Mass Spectrometry 

      Choiniere, John Robert (2013-04-17)
      Heme, a tetrapyrrole ringed molecule essential for life, is synthesized by the body in an eight-step, enzyme-assisted pathway. Each step is catalyzed by an enzyme; a genetic deficiency in any of the last seven of these ...