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Life duration of red blood cell

On average write down the life duration of red blood cells? Where are they destroyed? What is the destination of heme groups after destruction of hemoglobin molecules?

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On average the red blood cells live around 120 days. The spleen is main organ where old red blood cells are destroyed. Throughout the red blood cell destruction heme groups turn in bilirubin and this substance is then captured by liver and later excreted in bowels as part of the bile.

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