Mammatech Corporation sells breast tumor detection training system to individuals and health care professionals in Canada and Europe. Its system consists of a breast model; a 24-minute videocassette; and a practice kit for breast self-examination, which is designed to train individuals to perform manual breast examination. The company s breast models contain simulated tumors of varying sizes that contain material, which simulates the normal modularity or lumpiness. Mammatech was incorporated in 1981 and is based in Gainesville, Fla. It trades on the OTC Bulletin Board under the symbol MAMM.