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Porphyrine und einige ihrer Metallkomplexsalze (z. B. Chlorophylle, Hämo‐ und Myoglobin) spielen als Naturfarbstoffe eine bedeutende Rolle für das irdische Leben. Die chemische Struktur des Häms (prosthetische Gruppe des roten Blut‐ und Muskelfarbstoffs), seine Biosynthese und seine Abbauprodukte die Gallenfarbstoffe Biliverdin und Bilirubin werden beschrieben. In der Natur findet sich Biliverdin...
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