DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Syringe used to draw blood from a cannula inserted into a vein of the arm in a 70 year old male patient with chronic renal failure during kidney dialysis (haemodialysis). In haemodialysis the patient's blood is cleansed of waste products using a dialysis machine.
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