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Pronunciation varies by accent · noun
(biochemistry) A reduced form of porphyrin that is an intermediate in the biosynthesis of heme.
Use porphyrinogen when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Porphyrinogen means (biochemistry) A reduced form of porphyrin that is an intermediate in the biosynthesis of heme.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use porphyrinogen where its definition matches the intended context.
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