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A method to clean the blood of patients with renal failure.
A process of selective diffusion through a membrane; usually used to separate low-molecular-weight solutes which diffuse through the membrane from the colloidal and high-molecular-weight solutes which do not.
(chemistry) a method of separating molecules or particles of different sizes by differential diffusion through a semipermeable membrane
(rhetoric) To spell out alternatives, or to present either-or arguments that lead to a conclusion.