PAUL WOOTTON / SCIENCE PHOTO LIBRARY PAUL WOOTTON / SCIENCE PHOTO LIBRARY
Kidney dialysis machine, computer artwork. Kidney dialysis (haemodialysis) is necessary when the kidneys are unable to filter waste products from the blood naturally, so the patient's blood is fed through a dialysis machine (dialyser) which acts like an artificial kidney. The procedure takes several hours and must be repeated several times a week.
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