protoporphyrin
noun
pro·to·por·phy·rin
ˌprō-tō-ˈpȯr-f(ə-)rən 
: a purple porphyrin acid C34H34N4O4 obtained from hemin or heme by removal of bound iron
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“Protoporphyrin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/protoporphyrin. Accessed 23 Dec. 2024.
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protoporphyrin
noun
pro·to·por·phy·rin
ˌprōt-ō-ˈpȯr-f(ə-)rən
: a purple porphyrin acid C34H34N4O4 obtained from hemin or heme by removal of bound iron
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