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  • The efficiency of kidneys can be adversely affected by injury, infection or decreased blood supply. 
  • If this happens, excess of toxic substances accumulates in the body and it can lead to death. 
  • If kidneys fail, nitrogenous wastes are separated from the blood with the help of a man-made machine. 
  • The process of separating the nitrogenous waste from the blood with the help of this machine is called dialysis.
  •  About 500 ml of blood is sent at one time through this machine. Purified blood is reinfused into the body of the patient.

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