Facial composite In the U.S. the FBI maintains that hand-drawing is its preferred method for constructing a facial composite. Many other police agencies, however, use software, since suitable artistic talent is often not available. Until quite recently, the facial composite systems used by international police forces were exclusively based on a construction methodology in which individual facial features (eyes, nose, mouth, eyebrows, etc.) are selected one at a time from a large database and then electronically 'overlaid' to make the composite image. Such systems are often referred to as feature-based since they essentially rely on the selection of individual features in isolation.
Birth defects of diethylstilbestrol also have an increased risk of uterine fibroids, and incompetent cervix in adulthood. Studies of DES daughters have not found a link between "in utero" exposure to DES and autoimmune diseases. In an animal model designed to study environmental estrogens, DES turned out to be an obesogen capable of causing adult weight gain in female mice which had been exposed to DES during neonatal development. The excess weight gain was not apparent at birth or in infancy, but occurred in adulthood. Initially, fewer studies documented risks of prenatal exposure to DES on males (referred to as "DES sons"). In the