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A red protein responsible for transporting oxygen in the blood of vertebrates. Its molecule comprises four subunits, each containing an iron atom bound to a heme group.
- ‘The red blood cells carry red blood protein called haemoglobin.’
- ‘The key, she believes, may be the iron content of the blood and muscle proteins hemoglobin and myoglobin.’
- ‘Oxygen is carried in blood by hemoglobin, a protein in red blood cells.’
- ‘The main task of red blood cells is to transport oxygen bound to haemoglobin from the lungs to the tissues.’
- ‘As a test protein we focused on hemoglobin, which has several advantages.’
Mid 19th century: a contracted form of haematoglobulin, in the same sense.
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From Afghanistan to Zimbabwe, discover surprising and intriguing language facts from around the globe.
The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.