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por•phy•rin



Pronunciation: (pôr'fu-rin), [key]
n. Biochem.
a dark red, photosensitive pigment consisting of four pyrrole rings linked by single carbon atoms: a component of chlorophyll, heme, and vitamin B12.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

porphyriaporphyritic
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