Following are the steps of dialysis:
A. Blood is passed into a vein. 
B. Blood is mixed with heparin.
C. Blood is mixed with anti-heparin.
D. Blood is drained from convenient artery.
E. Blood is passed through a coiled and porous cellophane tube bathing in dialysis fluid. 
F. Removal of nitrogenous wastes from blood. 
    The correct sequence of steps is
 

D. Blood drained from a convenient artery. 

B. Blood is pumped into a dialyzing unit after adding an anticoagulant like heparin. 

E. Blood is pumped through a coiled cellophane tube surrounded by a fluid (dialyzing fluid) in the unit having the same composition as that of plasma except the nitrogenous wastes.

F. Nitrogenous wastes are removed from the blood . 

C. Blood is mixed with anti heparin.

A. Blood is pumped back to the body through a vein.