What’s Up Doc? Methemoglobinemia

Local Interest
Question: Is there really a disease that makes your blood look chocolate-colored?Answer: Oxygen binds to the iron in heme, a protein in red blood cells, RBCs; this iron is normally in the reduced ferrous form, Fe2+, and this oxygenated ferrous iron is what makes the blood look red. The oxygen is then carried to the body’s cells, where it “unbinds” so it can be used in “cellular respiration,” allowing cells to harness energy to perform their necessary [...]
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