ELECTROPHORESIS

"As a phenomenon: the movement of small suspended particles or very large molecules in a liquid driven by an electrical potential difference. Also called ""cataphoresis."" See electrokinetic effects. As an electroanalytical technique: a separation method for very large organic molecules (usually of biological origin) based on their different electrophoretic velocities through an ""immobilized"" liquid phase. The liquid can be immobilized by a variety of ""supports"", e.g.: paper, gelatinous material, capillary tubing. "