 ELISA antibody technology has been developed to allow for readable detection by the naked eye for rapid identification of coliform microcolonies.Other uses of antibodies in detection use magnetic beads coated with antibodies for the concentration and separation of the oocysts and cysts as described below for immunomagnetic separationz (IMS) methods.Immunomagnetic separation involves purified antigens biotinylated and bound to streptoavidin-coated paramagnetic particles.