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It is hemoglobin that is the oxygen transport substance in blood. Wikipedia has some good information on this metalloprotein, and a link is provided.

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15y ago
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9y ago

The red blood cell is the iron-containing compound that carries oxygen in the bloodstream. The color of red blood cells will even change due to the concentration of iron in the blood.

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11y ago

I beleive it is hemoglobin considering that is what transfers oxygen in the first place and in the fact that it is a protien.

-ZyraEdits

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10y ago

Iron is present in a compound called hemoglobin, which is present in red blood cells, which carry oxygen in the blood.

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14y ago

Haemoglobin

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12y ago

hemoglobn

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11y ago

hemoglobin

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Q: What is the oxygen carrying compound in blood?
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