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Noun: heme  heem
Usage: N. Amer (elsewhere: haem)
  1. A complex red organic pigment containing iron and other atoms to which oxygen binds
    "Heme is a crucial component of hemoglobin";
    - haem [Brit, Cdn], hematin [N. Amer], protoheme, haematin [Brit, Cdn]

Derived forms: hemes

Type of: pigment

Part of: cytochrome, haemoglobin [Brit, Cdn], Hb, hemoglobin [N. Amer], myoglobin

Encyclopedia: Heme