The group's principal activity is to sell medical devices for the treatment of certain immune system disorders. The group develops a novel therapeutic agent for the treatment of blood platelet disorders. The group's first product, the prosorba(R) column, a medical device, treats a patients defective immune system so that it can more effectively respond to certain diseases. The prosorba column is a plastic cylinder measuring three inches in diameter and three and one half inches in height. The cylinder contains a solid binding matrix composed of protein a bound to dry silica granules.