Procedure whereby plasma is separated and extracted from anticoagulated whole blood and the red cells retransfused to the donor. Plasmapheresis is also employed for therapeutic use.
Knife-edge
-
A piece of steel sharpened to an acute edge or angle,
and resting on a smooth surface, serving as the axis of motion of a
pendulum, scale beam, or other piece required to oscillate with the
least possible friction.
Knife-edge meaning & definition 1 of Knife-edge.
-
in a difficult or worrying situation of which the result is very uncertain:
Knife-edge meaning & definition 2 of Knife-edge.
Similar Words