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Pronunciation varies by accent · noun
(biochemistry) any of several natural pigments having a structure of four pyrrole rings connected by a one-carbon unit.
Use tetrapyrrole when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Tetrapyrrole means (biochemistry) any of several natural pigments having a structure of four pyrrole rings connected by a one-carbon unit.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use tetrapyrrole where its definition matches the intended context.
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