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Vinony

haem

noun

  1. chelation compound of ferrous ion and protoporphyrin, obtained on reduction of haematin
L1327671 on Wikidata ↗

Wiktionary

Pronunciation: /hiːm/

noun

  1. Australia, Canada, Ireland, New Zealand, South Africa, and UK standard spelling of heme.

    “Haem is ubiquitous, abundant and necessary for energy metabolism. Most bacteria have a haem biosynthesis pathway, but nevertheless, since haem is a major source of iron (an essential metal), microbes take up exogenous haem to retrieve iron.”