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Pronunciation varies by accent · noun
(biochemistry) Any of several precursors in the biosynthesis of protoporphyrin.
Use protoporphyrinogen when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Protoporphyrinogen means (biochemistry) Any of several precursors in the biosynthesis of protoporphyrin.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use protoporphyrinogen where its definition matches the intended context.
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