The nucleus of each tiny cheek cell holds the genetic make-up of the entire body. Consequently, cheek cells are frequently used in diagnostic tests, such as paternity determination, and DNA fingerprinting efforts. A group of scientists in Australia, however, have found a new use for cheek cells. The researchers are examining the sodium transport level of squamous epithelial cells in children to determine whether or not they have a predisposition for developing hypertension. If their studies and testing procedures prove successful, those with a greater proclivity may receive early warning and will be able to take preventative measures to avoid the condition.