Eli5- why if you have a blood disease can you not replace your blood?

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Like if you have sickle cell or blood cancer or things can you not just like use a dialysis machine to take out your sick blood and do new clean blood?

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Anonymous 0 Comments

The issue is not your blood per se, but the stuff that makes your blood *cells.* Things like your bone marrow. You can replace bone marrow! We do transplants.

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